From B-Real aka Dr Greenthumb's mixtape "The Prescription".
Produced by The Futuristiks.
Available for free download @ http://www.datpiff.com/B-Real-x-Dr-Greenthumb-The-Prescription-mixtape.689397.html
Further information @ http://breal.tv/ or http://www.cypresshill.com/ or http://www.myfunkvolume.com/