Wow this song is chill as hell. Looking at the song title and listening to it I thought I might have heard it in previews for Tarantino's recent movie, Django Unchained. After a little research though, I found the two to be unrelated.
This track is from an awesome album that I highly recommend: The Best of the Fabulous Three. It's an extremely chill jazzy, funky, soulful extravaganza.