In the two years since her boozy, confessional debut, Ida Maria Sivertsen has grown from an excitable and neurotic newcomer into something like Jack White's dream girl - a clever badass who wails bluesy ball-busters like Joan Jett by way of Janis Joplin. Produced by Butch Walker (Weezer, Avril Lavigne), KATLA is all big, trashy riffs and wicked disses ("The northern winds are blowing while someone's blowing you," she sings on "10,000 Lovers"). Ida Maria asks the universe to even the score with a slippery hustler on "Bad Karma," but she seems happier taking matters into her own hands on the mariachi(!)- laced "I Eat Boys Like You for Breakfast."

Listen to "Cherry Red":

Related: Video: Ida Maria Performing "Keep Me Warm"
Video: Ida Maria Performing "Drive Away My Heart"
Video: Ida Maria Performing "I Like You So Much Better When You're Naked"

“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."