'Sour Soul' is the collaborative album from Toronto jazz / hip-hop band BadBadNotGood and Staten Island rap champ Ghostface Killah. Inspired by and taking inspiration from 1960s and 70s music and the recording techniques and production of that era, and eschewing sampling in favour of live instrumentation, BBNG with producer Frank Dukes have created a dramatic, cinematic musical staging for Ghostface’s vivid storytelling. 'Sour Soul' also features guest spots from MF DOOM, Elzhi (Slum Village / J Dilla), Danny Brown and prodigal new rapper Tree (Project mayhem).