I guess you could kinda think of it as like a DJ featuring an artist. The DJ may never say a word on the record, but he's still featuring the artist because he took the time out to get them on the track.
Bleek did the same thing on the intro to Hard Knock Life.
Jay put "Anything" on Beanie Sigel's album instead of his own.
"BIBLE" on Liquid Swords had nothing to do with GZA.
its a GAME DISS CAUSE GAME KEPT DISSIN BLEEK AND JAY-z SHITTED ON HIM ON SOMEONEELSES ALBUM AHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH THE MADNESS!!!!!!
its a GAME DISS CAUSE GAME KEPT DISSIN BLEEK AND JAY-z SHITTED ON HIM ON SOMEONEELSES ALBUM AHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH THE MADNESS!!!!!!