Like a Top 40 Henny Youngman, "Weird Al" Yankovic's appeal seems to be as much about his semiheroic refusal to hang it the fuck up, already, as it is about his rec­ords - which, love 'em or hate 'em, never lack for targets. His latest batch of fish in a barrel sends up the paparazzi ("You just picked up some transvestite/Seconds later, it's up on the website," he chirps on "TMZ," a remake of Taylor Swift's "You Belong With Me"), online commerce (the Doors-biting "Craigslist") and Lady Gaga ("Perform This Way"). The jokes don't always relieve the earworm annoyingness of the Xeroxed tunes. Still, you can only hate so much on an accordion medley titled "Polka Face."

 Listen to "Perform This Way":

RELATED: 'Weird Al' Yankovic Parodies Lady Gaga in 'Perform This Way'

“I'm Yours”

Jason Mraz re-emerged after his disappointing second album with this lead single, a Jack Johnson-esque ditty about giving yourself fully to someone else. The success of the reggae-tinged song (it earned two Grammy nods and a spot on the Billboard singles chart for well over a year) was something the folk-pop singer never predicted when he wrote it in 15 minutes at home. "I played a happy-hippie chord progression that would probably work without 50 different Bob Marley songs," he told Rolling Stone. "I thought, 'It's too novelty. This is a nursery rhyme,'" concluding that "you can never guess what's gonna be a hit."