diff --git a/SpotifyAPI.Web/SpotifyWebAPI.cs b/SpotifyAPI.Web/SpotifyWebAPI.cs
index 2e31b33e..53a967d7 100644
--- a/SpotifyAPI.Web/SpotifyWebAPI.cs
+++ b/SpotifyAPI.Web/SpotifyWebAPI.cs
@@ -1319,6 +1319,7 @@ namespace SpotifyAPI.Web
         /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
         /// <returns></returns>
         /// <remarks>AUTH NEEDED</remarks>
+        [Obsolete("Calling GetPlaylist with a userId is deprecated, remove the parameter")]
         public FullPlaylist GetPlaylist(string userId, string playlistId, string fields = "", string market = "")
         {
             if (!UseAuth)
@@ -1326,6 +1327,24 @@ namespace SpotifyAPI.Web
             return DownloadData<FullPlaylist>(_builder.GetPlaylist(userId, playlistId, fields, market));
         }
 
+        /// <summary>
+        ///     Get a playlist owned by a Spotify user.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="fields">
+        ///     Filters for the query: a comma-separated list of the fields to return. If omitted, all fields are
+        ///     returned.
+        /// </param>
+        /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public FullPlaylist GetPlaylist(string playlistId, string fields = "", string market = "")
+        {
+            if (!UseAuth)
+                throw new InvalidOperationException("Auth is required for GetPlaylist");
+            return DownloadData<FullPlaylist>(_builder.GetPlaylist(playlistId, fields, market));
+        }
+
         /// <summary>
         ///     Get a playlist owned by a Spotify user asynchronously.
         /// </summary>
@@ -1338,6 +1357,7 @@ namespace SpotifyAPI.Web
         /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
         /// <returns></returns>
         /// <remarks>AUTH NEEDED</remarks>
+        [Obsolete("Calling GetPlaylist with a userId is deprecated, remove the parameter")]
         public Task<FullPlaylist> GetPlaylistAsync(string userId, string playlistId, string fields = "", string market = "")
         {
             if (!UseAuth)
@@ -1345,6 +1365,24 @@ namespace SpotifyAPI.Web
             return DownloadDataAsync<FullPlaylist>(_builder.GetPlaylist(userId, playlistId, fields, market));
         }
 
+        /// <summary>
+        ///     Get a playlist owned by a Spotify user asynchronously.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="fields">
+        ///     Filters for the query: a comma-separated list of the fields to return. If omitted, all fields are
+        ///     returned.
+        /// </param>
+        /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public Task<FullPlaylist> GetPlaylistAsync(string playlistId, string fields = "", string market = "")
+        {
+            if (!UseAuth)
+                throw new InvalidOperationException("Auth is required for GetPlaylist");
+            return DownloadDataAsync<FullPlaylist>(_builder.GetPlaylist(playlistId, fields, market));
+        }
+
         /// <summary>
         ///     Get full details of the tracks of a playlist owned by a Spotify user.
         /// </summary>
@@ -1359,6 +1397,7 @@ namespace SpotifyAPI.Web
         /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
         /// <returns></returns>
         /// <remarks>AUTH NEEDED</remarks>
+        [Obsolete("Calling GetPlaylistTracks with a userId is deprecated, remove the parameter")]
         public Paging<PlaylistTrack> GetPlaylistTracks(string userId, string playlistId, string fields = "", int limit = 100, int offset = 0, string market = "")
         {
             if (!UseAuth)
@@ -1366,6 +1405,26 @@ namespace SpotifyAPI.Web
             return DownloadData<Paging<PlaylistTrack>>(_builder.GetPlaylistTracks(userId, playlistId, fields, limit, offset, market));
         }
 
+        /// <summary>
+        ///     Get full details of the tracks of a playlist owned by a Spotify user.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="fields">
+        ///     Filters for the query: a comma-separated list of the fields to return. If omitted, all fields are
+        ///     returned.
+        /// </param>
+        /// <param name="limit">The maximum number of tracks to return. Default: 100. Minimum: 1. Maximum: 100.</param>
+        /// <param name="offset">The index of the first object to return. Default: 0 (i.e., the first object)</param>
+        /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public Paging<PlaylistTrack> GetPlaylistTracks(string playlistId, string fields = "", int limit = 100, int offset = 0, string market = "")
+        {
+            if (!UseAuth)
+                throw new InvalidOperationException("Auth is required for GetPlaylistTracks");
+            return DownloadData<Paging<PlaylistTrack>>(_builder.GetPlaylistTracks(playlistId, fields, limit, offset, market));
+        }
+
         /// <summary>
         ///     Get full details of the tracks of a playlist owned by a Spotify user asyncronously.
         /// </summary>
@@ -1380,6 +1439,7 @@ namespace SpotifyAPI.Web
         /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
         /// <returns></returns>
         /// <remarks>AUTH NEEDED</remarks>
+        [Obsolete("Calling GetPlaylistTracks with a userId is deprecated, remove the parameter")]
         public Task<Paging<PlaylistTrack>> GetPlaylistTracksAsync(string userId, string playlistId, string fields = "", int limit = 100, int offset = 0, string market = "")
         {
             if (!UseAuth)
@@ -1387,6 +1447,27 @@ namespace SpotifyAPI.Web
             return DownloadDataAsync<Paging<PlaylistTrack>>(_builder.GetPlaylistTracks(userId, playlistId, fields, limit, offset, market));
         }
 
+        /// <summary>
+        ///     Get full details of the tracks of a playlist owned by a Spotify user asyncronously.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="fields">
+        ///     Filters for the query: a comma-separated list of the fields to return. If omitted, all fields are
+        ///     returned.
+        /// </param>
+        /// <param name="limit">The maximum number of tracks to return. Default: 100. Minimum: 1. Maximum: 100.</param>
+        /// <param name="offset">The index of the first object to return. Default: 0 (i.e., the first object)</param>
+        /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        [Obsolete("Calling GetPlaylistTracks with a userId is deprecated, remove the parameter")]
+        public Task<Paging<PlaylistTrack>> GetPlaylistTracksAsync(string playlistId, string fields = "", int limit = 100, int offset = 0, string market = "")
+        {
+            if (!UseAuth)
+                throw new InvalidOperationException("Auth is required for GetPlaylistTracks");
+            return DownloadDataAsync<Paging<PlaylistTrack>>(_builder.GetPlaylistTracks(playlistId, fields, limit, offset, market));
+        }
+
         /// <summary>
         ///     Create a playlist for a Spotify user. (The playlist will be empty until you add tracks.)
         /// </summary>
@@ -1457,6 +1538,7 @@ namespace SpotifyAPI.Web
         /// <param name="newDescription">Value for playlist description as displayed in Spotify Clients and in the Web API.</param>
         /// <returns></returns>
         /// <remarks>AUTH NEEDED</remarks>
+        [Obsolete("Calling UpdatePlaylist with a userId is deprecated, remove the parameter")]
         public ErrorResponse UpdatePlaylist(string userId, string playlistId, string newName = null, bool? newPublic = null, bool? newCollaborative = null, string newDescription = null)
         {
             JObject body = new JObject();
@@ -1471,6 +1553,31 @@ namespace SpotifyAPI.Web
             return UploadData<ErrorResponse>(_builder.UpdatePlaylist(userId, playlistId), body.ToString(Formatting.None), "PUT") ?? new ErrorResponse();
         }
 
+        /// <summary>
+        ///     Change a playlist’s name and public/private state. (The user must, of course, own the playlist.)
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="newName">The new name for the playlist, for example "My New Playlist Title".</param>
+        /// <param name="newPublic">If true the playlist will be public, if false it will be private.</param>
+        /// <param name="newCollaborative">If true the playlist will become collaborative and other users will be able to modify the playlist in their Spotify client.
+        /// Note: You can only set collaborative to true on non-public playlists.</param>
+        /// <param name="newDescription">Value for playlist description as displayed in Spotify Clients and in the Web API.</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public ErrorResponse UpdatePlaylist(string playlistId, string newName = null, bool? newPublic = null, bool? newCollaborative = null, string newDescription = null)
+        {
+            JObject body = new JObject();
+            if (newName != null)
+                body.Add("name", newName);
+            if (newPublic != null)
+                body.Add("public", newPublic);
+            if (newCollaborative != null)
+                body.Add("collaborative", newCollaborative);
+            if (newDescription != null)
+                body.Add("description", newDescription);
+            return UploadData<ErrorResponse>(_builder.UpdatePlaylist(playlistId), body.ToString(Formatting.None), "PUT") ?? new ErrorResponse();
+        }
+
         /// <summary>
         ///     Change a playlist’s name and public/private state asynchronously. (The user must, of course, own the playlist.)
         /// </summary>
@@ -1482,6 +1589,7 @@ namespace SpotifyAPI.Web
         /// <param name="newDescription">Value for playlist description as displayed in Spotify Clients and in the Web API.</param>
         /// <returns></returns>
         /// <remarks>AUTH NEEDED</remarks>
+        [Obsolete("Calling UpdatePlaylist with a userId is deprecated, remove the parameter")]
         public async Task<ErrorResponse> UpdatePlaylistAsync(string userId, string playlistId, string newName = null, bool? newPublic = null, bool? newCollaborative = null, string newDescription = null)
         {
             JObject body = new JObject();
@@ -1496,6 +1604,30 @@ namespace SpotifyAPI.Web
             return (await UploadDataAsync<ErrorResponse>(_builder.UpdatePlaylist(userId, playlistId), body.ToString(Formatting.None), "PUT").ConfigureAwait(false)) ?? new ErrorResponse();
         }
 
+        /// <summary>
+        ///     Change a playlist’s name and public/private state asynchronously. (The user must, of course, own the playlist.)
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="newName">The new name for the playlist, for example "My New Playlist Title".</param>
+        /// <param name="newPublic">If true the playlist will be public, if false it will be private.</param>
+        /// <param name="newCollaborative">If true the playlist will become collaborative and other users will be able to modify the playlist in their Spotify client. Note: You can only set collaborative to true on non-public playlists.</param>
+        /// <param name="newDescription">Value for playlist description as displayed in Spotify Clients and in the Web API.</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public async Task<ErrorResponse> UpdatePlaylistAsync(string playlistId, string newName = null, bool? newPublic = null, bool? newCollaborative = null, string newDescription = null)
+        {
+            JObject body = new JObject();
+            if (newName != null)
+                body.Add("name", newName);
+            if (newPublic != null)
+                body.Add("public", newPublic);
+            if (newCollaborative != null)
+                body.Add("collaborative", newCollaborative);
+            if (newDescription != null)
+                body.Add("description", newDescription);
+            return (await UploadDataAsync<ErrorResponse>(_builder.UpdatePlaylist(playlistId), body.ToString(Formatting.None), "PUT").ConfigureAwait(false)) ?? new ErrorResponse();
+        }
+
         /// <summary>
         ///     Replace all the tracks in a playlist, overwriting its existing tracks. This powerful request can be useful for
         ///     replacing tracks, re-ordering existing tracks, or clearing the playlist.
@@ -1505,6 +1637,7 @@ namespace SpotifyAPI.Web
         /// <param name="uris">A list of Spotify track URIs to set. A maximum of 100 tracks can be set in one request.</param>
         /// <returns></returns>
         /// <remarks>AUTH NEEDED</remarks>
+        [Obsolete("Calling ReplacePlaylistTracks with a userId is deprecated, remove the parameter")]
         public ErrorResponse ReplacePlaylistTracks(string userId, string playlistId, List<string> uris)
         {
             JObject body = new JObject
@@ -1514,6 +1647,23 @@ namespace SpotifyAPI.Web
             return UploadData<ErrorResponse>(_builder.ReplacePlaylistTracks(userId, playlistId), body.ToString(Formatting.None), "PUT") ?? new ErrorResponse();
         }
 
+        /// <summary>
+        ///     Replace all the tracks in a playlist, overwriting its existing tracks. This powerful request can be useful for
+        ///     replacing tracks, re-ordering existing tracks, or clearing the playlist.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="uris">A list of Spotify track URIs to set. A maximum of 100 tracks can be set in one request.</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public ErrorResponse ReplacePlaylistTracks(string playlistId, List<string> uris)
+        {
+            JObject body = new JObject
+            {
+                {"uris", new JArray(uris.Take(100))}
+            };
+            return UploadData<ErrorResponse>(_builder.ReplacePlaylistTracks(playlistId), body.ToString(Formatting.None), "PUT") ?? new ErrorResponse();
+        }
+
         /// <summary>
         ///     Replace all the tracks in a playlist asynchronously, overwriting its existing tracks. This powerful request can be useful for
         ///     replacing tracks, re-ordering existing tracks, or clearing the playlist.
@@ -1523,6 +1673,7 @@ namespace SpotifyAPI.Web
         /// <param name="uris">A list of Spotify track URIs to set. A maximum of 100 tracks can be set in one request.</param>
         /// <returns></returns>
         /// <remarks>AUTH NEEDED</remarks>
+        [Obsolete("Calling ReplacePlaylistTracks with a userId is deprecated, remove the parameter")]
         public async Task<ErrorResponse> ReplacePlaylistTracksAsync(string userId, string playlistId, List<string> uris)
         {
             JObject body = new JObject
@@ -1532,6 +1683,23 @@ namespace SpotifyAPI.Web
             return await (UploadDataAsync<ErrorResponse>(_builder.ReplacePlaylistTracks(userId, playlistId), body.ToString(Formatting.None), "PUT").ConfigureAwait(false)) ?? new ErrorResponse();
         }
 
+        /// <summary>
+        ///     Replace all the tracks in a playlist asynchronously, overwriting its existing tracks. This powerful request can be useful for
+        ///     replacing tracks, re-ordering existing tracks, or clearing the playlist.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="uris">A list of Spotify track URIs to set. A maximum of 100 tracks can be set in one request.</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public async Task<ErrorResponse> ReplacePlaylistTracksAsync(string playlistId, List<string> uris)
+        {
+            JObject body = new JObject
+            {
+                {"uris", new JArray(uris.Take(100))}
+            };
+            return await (UploadDataAsync<ErrorResponse>(_builder.ReplacePlaylistTracks(playlistId), body.ToString(Formatting.None), "PUT").ConfigureAwait(false)) ?? new ErrorResponse();
+        }
+
         /// <summary>
         ///     Remove one or more tracks from a user’s playlist.
         /// </summary>
@@ -1543,6 +1711,7 @@ namespace SpotifyAPI.Web
         /// </param>
         /// <returns></returns>
         /// <remarks>AUTH NEEDED</remarks>
+        [Obsolete("Calling RemovePlaylistTracks with a userId is deprecated, remove the parameter")]
         public ErrorResponse RemovePlaylistTracks(string userId, string playlistId, List<DeleteTrackUri> uris)
         {
             JObject body = new JObject
@@ -1552,6 +1721,25 @@ namespace SpotifyAPI.Web
             return UploadData<ErrorResponse>(_builder.RemovePlaylistTracks(userId, playlistId, uris), body.ToString(Formatting.None), "DELETE") ?? new ErrorResponse();
         }
 
+        /// <summary>
+        ///     Remove one or more tracks from a user’s playlist.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="uris">
+        ///     array of objects containing Spotify URI strings (and their position in the playlist). A maximum of
+        ///     100 objects can be sent at once.
+        /// </param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public ErrorResponse RemovePlaylistTracks(string playlistId, List<DeleteTrackUri> uris)
+        {
+            JObject body = new JObject
+            {
+                {"tracks", JArray.FromObject(uris.Take(100))}
+            };
+            return UploadData<ErrorResponse>(_builder.RemovePlaylistTracks(playlistId, uris), body.ToString(Formatting.None), "DELETE") ?? new ErrorResponse();
+        }
+
         /// <summary>
         ///     Remove one or more tracks from a user’s playlist asynchronously.
         /// </summary>
@@ -1563,6 +1751,7 @@ namespace SpotifyAPI.Web
         /// </param>
         /// <returns></returns>
         /// <remarks>AUTH NEEDED</remarks>
+        [Obsolete("Calling RemovePlaylistTracks with a userId is deprecated, remove the parameter")]
         public async Task<ErrorResponse> RemovePlaylistTracksAsync(string userId, string playlistId, List<DeleteTrackUri> uris)
         {
             JObject body = new JObject
@@ -1572,6 +1761,25 @@ namespace SpotifyAPI.Web
             return await (UploadDataAsync<ErrorResponse>(_builder.RemovePlaylistTracks(userId, playlistId, uris), body.ToString(Formatting.None), "DELETE").ConfigureAwait(false)) ?? new ErrorResponse();
         }
 
+        /// <summary>
+        ///     Remove one or more tracks from a user’s playlist asynchronously.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="uris">
+        ///     array of objects containing Spotify URI strings (and their position in the playlist). A maximum of
+        ///     100 objects can be sent at once.
+        /// </param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public async Task<ErrorResponse> RemovePlaylistTracksAsync(string playlistId, List<DeleteTrackUri> uris)
+        {
+            JObject body = new JObject
+            {
+                {"tracks", JArray.FromObject(uris.Take(100))}
+            };
+            return await (UploadDataAsync<ErrorResponse>(_builder.RemovePlaylistTracks(playlistId, uris), body.ToString(Formatting.None), "DELETE").ConfigureAwait(false)) ?? new ErrorResponse();
+        }
+
         /// <summary>
         ///     Remove a track from a user’s playlist.
         /// </summary>
@@ -1580,9 +1788,22 @@ namespace SpotifyAPI.Web
         /// <param name="uri">Spotify URI</param>
         /// <returns></returns>
         /// <remarks>AUTH NEEDED</remarks>
+        [Obsolete("Calling RemovePlaylistTrack with a userId is deprecated, remove the parameter")]
         public ErrorResponse RemovePlaylistTrack(string userId, string playlistId, DeleteTrackUri uri)
         {
-            return RemovePlaylistTracks(userId, playlistId, new List<DeleteTrackUri> { uri });
+            return RemovePlaylistTracks(playlistId, new List<DeleteTrackUri> { uri });
+        }
+
+        /// <summary>
+        ///     Remove a track from a user’s playlist.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="uri">Spotify URI</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public ErrorResponse RemovePlaylistTrack(string playlistId, DeleteTrackUri uri)
+        {
+            return RemovePlaylistTracks(playlistId, new List<DeleteTrackUri> { uri });
         }
 
         /// <summary>
@@ -1593,9 +1814,22 @@ namespace SpotifyAPI.Web
         /// <param name="uri">Spotify URI</param>
         /// <returns></returns>
         /// <remarks>AUTH NEEDED</remarks>
+        [Obsolete("Calling RemovePlaylistTrack with a userId is deprecated, remove the parameter")]
         public Task<ErrorResponse> RemovePlaylistTrackAsync(string userId, string playlistId, DeleteTrackUri uri)
         {
-            return RemovePlaylistTracksAsync(userId, playlistId, new List<DeleteTrackUri> { uri });
+            return RemovePlaylistTracksAsync(playlistId, new List<DeleteTrackUri> { uri });
+        }
+
+        /// <summary>
+        ///     Remove a track from a user’s playlist asynchronously.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="uri">Spotify URI</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public Task<ErrorResponse> RemovePlaylistTrackAsync(string playlistId, DeleteTrackUri uri)
+        {
+            return RemovePlaylistTracksAsync(playlistId, new List<DeleteTrackUri> { uri });
         }
 
         /// <summary>
@@ -1607,6 +1841,7 @@ namespace SpotifyAPI.Web
         /// <param name="position">The position to insert the tracks, a zero-based index</param>
         /// <returns></returns>
         /// <remarks>AUTH NEEDED</remarks>
+        [Obsolete("Calling AddPlaylistTracks with a userId is deprecated, remove the parameter")]
         public ErrorResponse AddPlaylistTracks(string userId, string playlistId, List<string> uris, int? position = null)
         {
             JObject body = new JObject
@@ -1616,6 +1851,23 @@ namespace SpotifyAPI.Web
             return UploadData<ErrorResponse>(_builder.AddPlaylistTracks(userId, playlistId, uris, position), body.ToString(Formatting.None)) ?? new ErrorResponse();
         }
 
+        /// <summary>
+        ///     Add one or more tracks to a user’s playlist.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="uris">A list of Spotify track URIs to add</param>
+        /// <param name="position">The position to insert the tracks, a zero-based index</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public ErrorResponse AddPlaylistTracks(string playlistId, List<string> uris, int? position = null)
+        {
+            JObject body = new JObject
+            {
+                {"uris", JArray.FromObject(uris.Take(100))}
+            };
+            return UploadData<ErrorResponse>(_builder.AddPlaylistTracks(playlistId, uris, position), body.ToString(Formatting.None)) ?? new ErrorResponse();
+        }
+
         /// <summary>
         ///     Add one or more tracks to a user’s playlist asynchronously.
         /// </summary>
@@ -1625,6 +1877,7 @@ namespace SpotifyAPI.Web
         /// <param name="position">The position to insert the tracks, a zero-based index</param>
         /// <returns></returns>
         /// <remarks>AUTH NEEDED</remarks>
+        [Obsolete("Calling AddPlaylistTracks with a userId is deprecated, remove the parameter")]
         public async Task<ErrorResponse> AddPlaylistTracksAsync(string userId, string playlistId, List<string> uris, int? position = null)
         {
             JObject body = new JObject
@@ -1634,6 +1887,23 @@ namespace SpotifyAPI.Web
             return await (UploadDataAsync<ErrorResponse>(_builder.AddPlaylistTracks(userId, playlistId, uris, position), body.ToString(Formatting.None)).ConfigureAwait(false)) ?? new ErrorResponse();
         }
 
+        /// <summary>
+        ///     Add one or more tracks to a user’s playlist asynchronously.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="uris">A list of Spotify track URIs to add</param>
+        /// <param name="position">The position to insert the tracks, a zero-based index</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public async Task<ErrorResponse> AddPlaylistTracksAsync(string playlistId, List<string> uris, int? position = null)
+        {
+            JObject body = new JObject
+            {
+                {"uris", JArray.FromObject(uris.Take(100))}
+            };
+            return await (UploadDataAsync<ErrorResponse>(_builder.AddPlaylistTracks(playlistId, uris, position), body.ToString(Formatting.None)).ConfigureAwait(false)) ?? new ErrorResponse();
+        }
+
         /// <summary>
         ///     Add a track to a user’s playlist.
         /// </summary>
@@ -1643,9 +1913,24 @@ namespace SpotifyAPI.Web
         /// <param name="position">The position to insert the tracks, a zero-based index</param>
         /// <returns></returns>
         /// <remarks>AUTH NEEDED</remarks>
+        [Obsolete("Calling AddPlaylistTrack with a userId is deprecated, remove the parameter")]
         public ErrorResponse AddPlaylistTrack(string userId, string playlistId, string uri, int? position = null)
         {
-            return AddPlaylistTracks(userId, playlistId, new List<string> { uri }, position);
+            return AddPlaylistTracks(playlistId, new List<string> { uri }, position);
+        }
+
+
+        /// <summary>
+        ///     Add a track to a user’s playlist.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="uri">A Spotify Track URI</param>
+        /// <param name="position">The position to insert the tracks, a zero-based index</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public ErrorResponse AddPlaylistTrack(string playlistId, string uri, int? position = null)
+        {
+            return AddPlaylistTracks(playlistId, new List<string> { uri }, position);
         }
 
         /// <summary>
@@ -1657,11 +1942,25 @@ namespace SpotifyAPI.Web
         /// <param name="position">The position to insert the tracks, a zero-based index</param>
         /// <returns></returns>
         /// <remarks>AUTH NEEDED</remarks>
+        [Obsolete("Calling AddPlaylistTrack with a userId is deprecated, remove the parameter")]
         public Task<ErrorResponse> AddPlaylistTrackAsync(string userId, string playlistId, string uri, int? position = null)
         {
             return AddPlaylistTracksAsync(userId, playlistId, new List<string> { uri }, position);
         }
 
+        /// <summary>
+        ///     Add a track to a user’s playlist asynchronously.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="uri">A Spotify Track URI</param>
+        /// <param name="position">The position to insert the tracks, a zero-based index</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public Task<ErrorResponse> AddPlaylistTrackAsync(string playlistId, string uri, int? position = null)
+        {
+            return AddPlaylistTracksAsync(playlistId, new List<string> { uri }, position);
+        }
+
         /// <summary>
         ///     Reorder a track or a group of tracks in a playlist.
         /// </summary>
@@ -1673,6 +1972,7 @@ namespace SpotifyAPI.Web
         /// <param name="snapshotId">The playlist's snapshot ID against which you want to make the changes.</param>
         /// <returns></returns>
         /// <remarks>AUTH NEEDED</remarks>
+        [Obsolete("Calling ReorderPlaylist with a userId is deprecated, remove the parameter")]
         public Snapshot ReorderPlaylist(string userId, string playlistId, int rangeStart, int insertBefore, int rangeLength = 1, string snapshotId = "")
         {
             JObject body = new JObject
@@ -1686,6 +1986,29 @@ namespace SpotifyAPI.Web
             return UploadData<Snapshot>(_builder.ReorderPlaylist(userId, playlistId), body.ToString(Formatting.None), "PUT");
         }
 
+        /// <summary>
+        ///     Reorder a track or a group of tracks in a playlist.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="rangeStart">The position of the first track to be reordered.</param>
+        /// <param name="insertBefore">The position where the tracks should be inserted. </param>
+        /// <param name="rangeLength">The amount of tracks to be reordered. Defaults to 1 if not set.</param>
+        /// <param name="snapshotId">The playlist's snapshot ID against which you want to make the changes.</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public Snapshot ReorderPlaylist(string playlistId, int rangeStart, int insertBefore, int rangeLength = 1, string snapshotId = "")
+        {
+            JObject body = new JObject
+            {
+                {"range_start", rangeStart},
+                {"range_length", rangeLength},
+                {"insert_before", insertBefore}
+            };
+            if (!string.IsNullOrEmpty(snapshotId))
+                body.Add("snapshot_id", snapshotId);
+            return UploadData<Snapshot>(_builder.ReorderPlaylist(playlistId), body.ToString(Formatting.None), "PUT");
+        }
+
         /// <summary>
         ///     Reorder a track or a group of tracks in a playlist asynchronously.
         /// </summary>
@@ -1697,6 +2020,7 @@ namespace SpotifyAPI.Web
         /// <param name="snapshotId">The playlist's snapshot ID against which you want to make the changes.</param>
         /// <returns></returns>
         /// <remarks>AUTH NEEDED</remarks>
+        [Obsolete("Calling ReorderPlaylist with a userId is deprecated, remove the parameter")]
         public Task<Snapshot> ReorderPlaylistAsync(string userId, string playlistId, int rangeStart, int insertBefore, int rangeLength = 1, string snapshotId = "")
         {
             JObject body = new JObject
@@ -1711,6 +2035,30 @@ namespace SpotifyAPI.Web
             return UploadDataAsync<Snapshot>(_builder.ReorderPlaylist(userId, playlistId), body.ToString(Formatting.None), "PUT");
         }
 
+        /// <summary>
+        ///     Reorder a track or a group of tracks in a playlist asynchronously.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="rangeStart">The position of the first track to be reordered.</param>
+        /// <param name="insertBefore">The position where the tracks should be inserted. </param>
+        /// <param name="rangeLength">The amount of tracks to be reordered. Defaults to 1 if not set.</param>
+        /// <param name="snapshotId">The playlist's snapshot ID against which you want to make the changes.</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public Task<Snapshot> ReorderPlaylistAsync(string playlistId, int rangeStart, int insertBefore, int rangeLength = 1, string snapshotId = "")
+        {
+            JObject body = new JObject
+            {
+                {"range_start", rangeStart},
+                {"range_length", rangeLength},
+                {"insert_before", insertBefore},
+                {"snapshot_id", snapshotId}
+            };
+            if (!string.IsNullOrEmpty(snapshotId))
+                body.Add("snapshot_id", snapshotId);
+            return UploadDataAsync<Snapshot>(_builder.ReorderPlaylist(playlistId), body.ToString(Formatting.None), "PUT");
+        }
+
         #endregion Playlists
 
         #region Profiles
diff --git a/SpotifyAPI.Web/SpotifyWebBuilder.cs b/SpotifyAPI.Web/SpotifyWebBuilder.cs
index 84a197f1..e30a6dad 100644
--- a/SpotifyAPI.Web/SpotifyWebBuilder.cs
+++ b/SpotifyAPI.Web/SpotifyWebBuilder.cs
@@ -649,6 +649,26 @@ namespace SpotifyAPI.Web
             return builder.ToString();
         }
 
+        /// <summary>
+        ///     Get a playlist owned by a Spotify user.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="fields">
+        ///     Filters for the query: a comma-separated list of the fields to return. If omitted, all fields are
+        ///     returned.
+        /// </param>
+        /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public string GetPlaylist(string playlistId, string fields = "", string market = "")
+        {
+            StringBuilder builder = new StringBuilder(APIBase + "/playlists/" + playlistId);
+            builder.Append("?fields=" + fields);
+            if (!string.IsNullOrEmpty(market))
+                builder.Append("&market=" + market);
+            return builder.ToString();
+        }
+
         /// <summary>
         ///     Get full details of the tracks of a playlist owned by a Spotify user.
         /// </summary>
@@ -675,6 +695,31 @@ namespace SpotifyAPI.Web
             return builder.ToString();
         }
 
+        /// <summary>
+        ///     Get full details of the tracks of a playlist owned by a Spotify user.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="fields">
+        ///     Filters for the query: a comma-separated list of the fields to return. If omitted, all fields are
+        ///     returned.
+        /// </param>
+        /// <param name="limit">The maximum number of tracks to return. Default: 100. Minimum: 1. Maximum: 100.</param>
+        /// <param name="offset">The index of the first object to return. Default: 0 (i.e., the first object)</param>
+        /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public string GetPlaylistTracks(string playlistId, string fields = "", int limit = 100, int offset = 0, string market = "")
+        {
+            limit = Math.Min(limit, 100);
+            StringBuilder builder = new StringBuilder(APIBase + "/playlists/" + playlistId + "/tracks");
+            builder.Append("?fields=" + fields);
+            builder.Append("&limit=" + limit);
+            builder.Append("&offset=" + offset);
+            if (!string.IsNullOrEmpty(market))
+                builder.Append("&market=" + market);
+            return builder.ToString();
+        }
+
         /// <summary>
         ///     Create a playlist for a Spotify user. (The playlist will be empty until you add tracks.)
         /// </summary>
@@ -706,6 +751,17 @@ namespace SpotifyAPI.Web
             return $"{APIBase}/users/{userId}/playlists/{playlistId}";
         }
 
+        /// <summary>
+        ///     Change a playlist’s name and public/private state. (The user must, of course, own the playlist.)
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public string UpdatePlaylist(string playlistId)
+        {
+            return $"{APIBase}/playlists/{playlistId}";
+        }
+
         /// <summary>
         ///     Replace all the tracks in a playlist, overwriting its existing tracks. This powerful request can be useful for
         ///     replacing tracks, re-ordering existing tracks, or clearing the playlist.
@@ -719,6 +775,18 @@ namespace SpotifyAPI.Web
             return $"{APIBase}/users/{userId}/playlists/{playlistId}/tracks";
         }
 
+        /// <summary>
+        ///     Replace all the tracks in a playlist, overwriting its existing tracks. This powerful request can be useful for
+        ///     replacing tracks, re-ordering existing tracks, or clearing the playlist.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public string ReplacePlaylistTracks(string playlistId)
+        {
+            return $"{APIBase}/playlists/{playlistId}/tracks";
+        }
+
         /// <summary>
         ///     Remove one or more tracks from a user’s playlist.
         /// </summary>
@@ -735,6 +803,21 @@ namespace SpotifyAPI.Web
             return $"{APIBase}/users/{userId}/playlists/{playlistId}/tracks";
         }
 
+        /// <summary>
+        ///     Remove one or more tracks from a user’s playlist.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="uris">
+        ///     array of objects containing Spotify URI strings (and their position in the playlist). A maximum of
+        ///     100 objects can be sent at once.
+        /// </param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public string RemovePlaylistTracks(string playlistId, List<DeleteTrackUri> uris)
+        {
+            return $"{APIBase}/playlists/{playlistId}/tracks";
+        }
+
         /// <summary>
         ///     Add one or more tracks to a user’s playlist.
         /// </summary>
@@ -751,6 +834,21 @@ namespace SpotifyAPI.Web
             return $"{APIBase}/users/{userId}/playlists/{playlistId}/tracks?position={position}";
         }
 
+        /// <summary>
+        ///     Add one or more tracks to a user’s playlist.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <param name="uris">A list of Spotify track URIs to add</param>
+        /// <param name="position">The position to insert the tracks, a zero-based index</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public string AddPlaylistTracks(string playlistId, List<string> uris, int? position = null)
+        {
+            if (position == null)
+                return $"{APIBase}/playlists/{playlistId}/tracks";
+            return $"{APIBase}/playlists/{playlistId}/tracks?position={position}";
+        }
+
         /// <summary>
         ///     Reorder a track or a group of tracks in a playlist.
         /// </summary>
@@ -763,6 +861,17 @@ namespace SpotifyAPI.Web
             return $"{APIBase}/users/{userId}/playlists/{playlistId}/tracks";
         }
 
+        /// <summary>
+        ///     Reorder a track or a group of tracks in a playlist.
+        /// </summary>
+        /// <param name="playlistId">The Spotify ID for the playlist.</param>
+        /// <returns></returns>
+        /// <remarks>AUTH NEEDED</remarks>
+        public string ReorderPlaylist(string playlistId)
+        {
+            return $"{APIBase}/playlists/{playlistId}/tracks";
+        }
+
         #endregion Playlists
 
         #region Profiles