Albums:
Mica Paris - The Hardest Thing (2009)
Scene and Whop - Hardest of the Hardest (2008)
Tribal Injection - Real Thing (Summer Thing) (2009)
Coldplay - The Hardest part (2006)
Big Worm - Souths Hardest (2008)
Saafir - One of the Hardest (2005)
Lady Tom - Dark Europe (Hardest Show) (2006)
Rigas - The Hardest Pocket to Pick (2007)
Blank and Jones - The Hardest Heart (2002)
Trancematic and Chris Charisma - The Hardest Hit (2003)
Big Pokey - Hardest Pit in the Litter (1999)
T.C.F. Crew - Hardest Working Lover (1993)
Darkroom Familia - Darkrooms Hardest Hits volume 1 (2009)
Abstract Mindstate - Chicagos Hardest Working volume 1 (2005)
Panacea and Cativo - Hardest Tour on Planet Earth (2001)
Various Artists - Hardest Hits Modern Rock of the 80s (2003)
In Harbour - The Hardest part is Learning to Swim (2008)
Various Artists - Hardtek the Hardest Stuff in Electronic Dancemusic (2008)
Abstract Mindstate - Chicagos Hardest Working volume 2 (Project Soul) (2005)