5. "U Don't Know" (2001)
Just Blaze's pairing of room-shaking bass and a sped-up sample of funk pioneer Bobby Byrd's 1970 scorcher "I'm Not to Blame" act as a momentous springboard for Jay's boasting about his various business successes – his drug-slinging days in "Hell, where you are welcome to sell," and the growth of his Roc-A-Fella empire into one that can "smarten up, open the market up" into unexpected avenues like clothing. Jay thunders "Motherfucker, I – will – not – lose" as the music drops out before the fourth verse. It's a stunning moment where his confidence explodes into triumphant catharsis.