One day, while taking a break from his busy schedule of (still) not (officially) dating Beyonce, Jay-Z looked at the Def Jam roster and realized what was missing was a pint-sized female rap prodigy. So faster than you can say "retired," Jay recruited the motor-mouthed, Cockney slang-slinging emcee Lady Sovereign. Public Warning, her rollicking Def Jam debut, is so good that it's easier to list what doesn't work: "Those Were the Days" is kind of boring. That's it. The moral of the story? As usual, Hova knows best.