Yusef Kelliebrew is featured as a drummer all over the OST. You may hear him as a drummer on many tracks I upload here in the future. Please consider following his twitter https://twitter.com/ykelliebrew as he is a skilled multi-instrumentalist, arranger, and composer himself.
Lots of Super Audio Cart and Magical Box here, as well as NI Funk Guitarist. Some of the sounds are subtly shaped by breath control.