Countless producers have jacked different pieces of David Porter's "I'm Afraid The Masquerade is Over," from his 1971 concept album Victim of the Joke? An Opera. Here are a few notable ones. My personal fav is Rza's usage of the opening pianos for Gza's "Duel of the Iron Mic," although the new Freeway joint, "It's Over," is a good flip.

David Porter "I'm Afraid The Masquerade Is Over" (1971)

GZA "Duel of the Iron Mic" (1995)

The Notorious B.I.G. "Who Shot Ya?" (1995)

Freeway "It's Over" (2007)

LL Cool J "Ill Bomb" (1999)

Faith Evans "Alone In This World" (2001)

Ghostface "It's Over" (2004)

Mary J. Blige f/ Ghostface "Your Child (Remix)" (2006)