This blog has joined spotify and a "mixtape" will be uploaded regularly. There will be playlists offering soul/ R&B gems, retro & a potpourri of styles & genres. 
Here's the first:
R&B/ soul mixtape 1

https://open.spotify.com/user/alanrosscaffelatte/playlist/5YCTUmmyQLjWrIHkZTkd74
Enjoy!