From the dudes behind that toasty remix of Kid Cudi's "Day 'N' Nite" comes this electro-house ruckus. Built around insane laughter and rubbery beats, it targets that wee-hours moment in the club when you think your head might explode. Then the DJ drops this, and it does.

Listen to Crookers feat. Style of Eye and Carli's "That Laughing Track":

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• Photos: Random Notes

“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."