diff --git a/SpotifyAPI/Web/SpotifyWebAPI.cs b/SpotifyAPI/Web/SpotifyWebAPI.cs
index 3520347d..6704803c 100644
--- a/SpotifyAPI/Web/SpotifyWebAPI.cs
+++ b/SpotifyAPI/Web/SpotifyWebAPI.cs
@@ -1864,6 +1864,15 @@ namespace SpotifyAPI.Web
             return DownloadData<AvailabeDevices>(_builder.GetDevices());
         }
 
+        /// <summary>
+        ///     Get information about a user’s available devices.
+        /// </summary>
+        /// <returns></returns>
+        public Task<AvailabeDevices> GetDevicesAsync()
+        {
+            return DownloadDataAsync<AvailabeDevices>(_builder.GetDevices());
+        }
+
         /// <summary>
         ///     Get information about the user’s current playback state, including track, track progress, and active device.
         /// </summary>
@@ -1874,6 +1883,16 @@ namespace SpotifyAPI.Web
             return DownloadData<PlaybackContext>(_builder.GetPlayback(market));
         }
 
+        /// <summary>
+        ///     Get information about the user’s current playback state, including track, track progress, and active device.
+        /// </summary>
+        /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
+        /// <returns></returns>
+        public Task<PlaybackContext> GetPlaybackAsync(string market = "")
+        {
+            return DownloadDataAsync<PlaybackContext>(_builder.GetPlayback(market));
+        }
+
         /// <summary>
         ///     Get the object currently being played on the user’s Spotify account.
         /// </summary>
@@ -1884,6 +1903,16 @@ namespace SpotifyAPI.Web
             return DownloadData<PlaybackContext>(_builder.GetPlayingTrack(market));
         }
 
+        /// <summary>
+        ///     Get the object currently being played on the user’s Spotify account.
+        /// </summary>
+        /// <param name="market">An ISO 3166-1 alpha-2 country code. Provide this parameter if you want to apply Track Relinking.</param>
+        /// <returns></returns>
+        public Task<PlaybackContext> GetPlayingTrackAsync(string market = "")
+        {
+            return DownloadDataAsync<PlaybackContext>(_builder.GetPlayingTrack(market));
+        }
+
         /// <summary>
         ///     Transfer playback to a new device and determine if it should start playing.
         /// </summary>
@@ -1896,6 +1925,18 @@ namespace SpotifyAPI.Web
         public ErrorResponse TransferPlayback(string deviceId, bool play = false) => TransferPlayback(
             new List<string> { deviceId }, play);
 
+        /// <summary>
+        ///     Transfer playback to a new device and determine if it should start playing.
+        /// </summary>
+        /// <param name="deviceId">ID of the device on which playback should be started/transferred to</param>
+        /// <param name="play">
+        /// true: ensure playback happens on new device.
+        /// false or not provided: keep the current playback state.
+        /// </param>
+        /// <returns></returns>
+        public Task<ErrorResponse> TransferPlaybackAsync(string deviceId, bool play = false) => TransferPlaybackAsync(
+            new List<string> { deviceId }, play);
+
         /// <summary>
         ///     Transfer playback to a new device and determine if it should start playing. 
         ///     NOTE: Although an array is accepted, only a single device_id is currently supported. Supplying more than one will return 400 Bad Request
@@ -1916,6 +1957,26 @@ namespace SpotifyAPI.Web
             return UploadData<ErrorResponse>(_builder.TransferPlayback(), ob.ToString(Formatting.None), "PUT");
         }
 
+        /// <summary>
+        ///     Transfer playback to a new device and determine if it should start playing. 
+        ///     NOTE: Although an array is accepted, only a single device_id is currently supported. Supplying more than one will return 400 Bad Request
+        /// </summary>
+        /// <param name="deviceIds">A array containing the ID of the device on which playback should be started/transferred.</param>
+        /// <param name="play">
+        /// true: ensure playback happens on new device.
+        /// false or not provided: keep the current playback state.
+        /// </param>
+        /// <returns></returns>
+        public Task<ErrorResponse> TransferPlaybackAsync(List<string> deviceIds, bool play = false)
+        {
+            JObject ob = new JObject()
+            {
+                { "play", play },
+                { "device_ids", new JArray(deviceIds) }
+            };
+            return UploadDataAsync<ErrorResponse>(_builder.TransferPlayback(), ob.ToString(Formatting.None), "PUT");
+        }
+
         /// <summary>
         ///     Start a new context or resume current playback on the user’s active device.
         /// </summary>
@@ -1938,6 +1999,28 @@ namespace SpotifyAPI.Web
             return UploadData<ErrorResponse>(_builder.ResumePlayback(deviceId), ob.ToString(Formatting.None), "PUT");
         }
 
+        /// <summary>
+        ///     Start a new context or resume current playback on the user’s active device.
+        /// </summary>
+        /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
+        /// <param name="contextUri">Spotify URI of the context to play.</param>
+        /// <param name="uris">A JSON array of the Spotify track URIs to play.</param>
+        /// <param name="offset">Indicates from where in the context playback should start. 
+        /// Only available when context_uri corresponds to an album or playlist object, or when the uris parameter is used.</param>
+        /// <returns></returns>
+        public Task<ErrorResponse> ResumePlaybackAsync(string deviceId = "", string contextUri = "", List<string> uris = null,
+            int? offset = null)
+        {
+            JObject ob = new JObject();
+            if (!string.IsNullOrEmpty(contextUri))
+                ob.Add("context_uri", contextUri);
+            if (uris != null)
+                ob.Add("uris", new JArray(uris));
+            if (offset != null)
+                ob.Add("offset", new JObject { { "position", offset } });
+            return UploadDataAsync<ErrorResponse>(_builder.ResumePlayback(deviceId), ob.ToString(Formatting.None), "PUT");
+        }
+
         /// <summary>
         ///     Start a new context or resume current playback on the user’s active device.
         /// </summary>
@@ -1960,6 +2043,28 @@ namespace SpotifyAPI.Web
             return UploadData<ErrorResponse>(_builder.ResumePlayback(deviceId), ob.ToString(Formatting.None), "PUT");
         }
 
+        /// <summary>
+        ///     Start a new context or resume current playback on the user’s active device.
+        /// </summary>
+        /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
+        /// <param name="contextUri">Spotify URI of the context to play.</param>
+        /// <param name="uris">A JSON array of the Spotify track URIs to play.</param>
+        /// <param name="offset">Indicates from where in the context playback should start. 
+        /// Only available when context_uri corresponds to an album or playlist object, or when the uris parameter is used.</param>
+        /// <returns></returns>
+        public Task<ErrorResponse> ResumePlaybackAsync(string deviceId = "", string contextUri = "", List<string> uris = null,
+            string offset = "")
+        {
+            JObject ob = new JObject();
+            if (!string.IsNullOrEmpty(contextUri))
+                ob.Add("context_uri", contextUri);
+            if (uris != null)
+                ob.Add("uris", new JArray(uris));
+            if (!string.IsNullOrEmpty(offset))
+                ob.Add("offset", new JObject { { "uri", offset } });
+            return UploadDataAsync<ErrorResponse>(_builder.ResumePlayback(deviceId), ob.ToString(Formatting.None), "PUT");
+        }
+
         /// <summary>
         ///     Pause playback on the user’s account.
         /// </summary>
@@ -1970,6 +2075,16 @@ namespace SpotifyAPI.Web
             return UploadData<ErrorResponse>(_builder.PausePlayback(deviceId), string.Empty, "PUT");
         }
 
+        /// <summary>
+        ///     Pause playback on the user’s account.
+        /// </summary>
+        /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
+        /// <returns></returns>
+        public Task<ErrorResponse> PausePlaybackAsync(string deviceId = "")
+        {
+            return UploadDataAsync<ErrorResponse>(_builder.PausePlayback(deviceId), string.Empty, "PUT");
+        }
+
         /// <summary>
         ///     Skips to next track in the user’s queue.
         /// </summary>
@@ -1980,6 +2095,16 @@ namespace SpotifyAPI.Web
             return UploadData<ErrorResponse>(_builder.SkipPlaybackToNext(deviceId), string.Empty);
         }
 
+        /// <summary>
+        ///     Skips to next track in the user’s queue.
+        /// </summary>
+        /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
+        /// <returns></returns>
+        public Task<ErrorResponse> SkipPlaybackToNextAsync(string deviceId = "")
+        {
+            return UploadDataAsync<ErrorResponse>(_builder.SkipPlaybackToNext(deviceId), string.Empty);
+        }
+
         /// <summary>
         ///     Skips to previous track in the user’s queue.
         ///     Note that this will ALWAYS skip to the previous track, regardless of the current track’s progress.
@@ -1992,6 +2117,18 @@ namespace SpotifyAPI.Web
             return UploadData<ErrorResponse>(_builder.SkipPlaybackToPrevious(deviceId), string.Empty);
         }
 
+        /// <summary>
+        ///     Skips to previous track in the user’s queue.
+        ///     Note that this will ALWAYS skip to the previous track, regardless of the current track’s progress.
+        ///     Returning to the start of the current track should be performed using the https://api.spotify.com/v1/me/player/seek endpoint.
+        /// </summary>
+        /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
+        /// <returns></returns>
+        public Task<ErrorResponse> SkipPlaybackToPreviousAsync(string deviceId = "")
+        {
+            return UploadDataAsync<ErrorResponse>(_builder.SkipPlaybackToPrevious(deviceId), string.Empty);
+        }
+
         /// <summary>
         ///     Seeks to the given position in the user’s currently playing track.
         /// </summary>
@@ -2004,6 +2141,18 @@ namespace SpotifyAPI.Web
             return UploadData<ErrorResponse>(_builder.SeekPlayback(positionMs, deviceId), string.Empty, "PUT");
         }
 
+        /// <summary>
+        ///     Seeks to the given position in the user’s currently playing track.
+        /// </summary>
+        /// <param name="positionMs">The position in milliseconds to seek to. Must be a positive number. 
+        /// Passing in a position that is greater than the length of the track will cause the player to start playing the next song.</param>
+        /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
+        /// <returns></returns>
+        public Task<ErrorResponse> SeekPlaybackAsync(int positionMs, string deviceId = "")
+        {
+            return UploadDataAsync<ErrorResponse>(_builder.SeekPlayback(positionMs, deviceId), string.Empty, "PUT");
+        }
+
         /// <summary>
         ///     Set the repeat mode for the user’s playback. Options are repeat-track, repeat-context, and off.
         /// </summary>
@@ -2015,6 +2164,17 @@ namespace SpotifyAPI.Web
             return UploadData<ErrorResponse>(_builder.SetRepeatMode(state, deviceId), string.Empty, "PUT");
         }
 
+        /// <summary>
+        ///     Set the repeat mode for the user’s playback. Options are repeat-track, repeat-context, and off.
+        /// </summary>
+        /// <param name="state">track, context or off. </param>
+        /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
+        /// <returns></returns>
+        public Task<ErrorResponse> SetRepeatModeAsync(RepeatState state, string deviceId = "")
+        {
+            return UploadDataAsync<ErrorResponse>(_builder.SetRepeatMode(state, deviceId), string.Empty, "PUT");
+        }
+
         /// <summary>
         ///     Set the volume for the user’s current playback device.
         /// </summary>
@@ -2026,6 +2186,17 @@ namespace SpotifyAPI.Web
             return UploadData<ErrorResponse>(_builder.SetVolume(volumePercent, deviceId), string.Empty, "PUT");
         }
 
+        /// <summary>
+        ///     Set the volume for the user’s current playback device.
+        /// </summary>
+        /// <param name="volumePercent">Integer. The volume to set. Must be a value from 0 to 100 inclusive.</param>
+        /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
+        /// <returns></returns>
+        public Task<ErrorResponse> SetVolumeAsync(int volumePercent, string deviceId = "")
+        {
+            return UploadDataAsync<ErrorResponse>(_builder.SetVolume(volumePercent, deviceId), string.Empty, "PUT");
+        }
+
         /// <summary>
         ///     Toggle shuffle on or off for user’s playback.
         /// </summary>
@@ -2037,6 +2208,17 @@ namespace SpotifyAPI.Web
             return UploadData<ErrorResponse>(_builder.SetShuffle(shuffle, deviceId), string.Empty, "PUT");
         }
 
+        /// <summary>
+        ///     Toggle shuffle on or off for user’s playback.
+        /// </summary>
+        /// <param name="shuffle">True or False</param>
+        /// <param name="deviceId">The id of the device this command is targeting. If not supplied, the user's currently active device is the target.</param>
+        /// <returns></returns>
+        public Task<ErrorResponse> SetShuffleAsync(bool shuffle, string deviceId = "")
+        {
+            return UploadDataAsync<ErrorResponse>(_builder.SetShuffle(shuffle, deviceId), string.Empty, "PUT");
+        }
+
         #endregion
 
         #region Util