There are two Substance Abuse artists of this name. 1) The hip-hop group from USA 2) 3 piece crossover thrash band from Melbourne, Australia formed in 2013.
http://substance-abuse.bandcamp.com/
1) You can almost say that Substance Abuse's Overproof is two albums. One half a chillin' and relaxin' summer time slow ride in the vein of People Under The Stairs and Ugly Duckling, the other a mad scientist surgical creation, lurking somewhere between Kool Keith and the Def Jux crew.

Read more about Substance Abuse on Last.fm.