41. Jay-Z "U Don't Know" (2001)
Producer: Just Blaze
Album: The Blueprint
Label: Roc-A-Fella, Def Jam
Just Blaze manipulated a sped-up version of the beginning of Bobby Byrd's "I'm Not to Blame" (from a live album) for this Blueprint burner, although he later confessed to us that he wasn't entirely happy with the final beat: "I always wanted to make it bigger and better, and make the drums hit harder, and the bass more in your face." He later got the chance to adjust the beat for a remix of the song featuring recent Roc-A-Fella signees M.O.P. Don't you just love a happy ending?
Related: Just Blaze Tells All: The Stories Behind His Classic Records (Part 1)