Substance Abuse is a Los Angeles based hip-hop group consisting of the duo Subz and Eso Tre. The group dropped their debut single "What The F**K You Rhymin' For?" in 2000 on the now defunct Ground Control Records, which was followed by the single "Can't Call It"/"No Guarantees" featuring P.E.A.C.E. and Thes One on Weapon Shaped Records. Their debut album, Overproof, was released in 2006, and features cameos from Kool Keith, MF Doom, Motion Man, Saafir, and Rasco. The album received four stars in URB and Scratch Magazine. From Wikipedia →