Gym Class Heroes' Travie (formerly Travis) McCoy invented his own market by mixing emo, hip-hop and tween pop, and on his solo debut he makes good on a life of passing out business cards by pulling in everyone from T-Pain to Colin Munroe. He writes what he knows: money ("Billionaire"), tour-bus nookie ("Superbad [11:34]"), ambition ("The Manual"). His polished croon-rapping is more unctuous than charming, but he gets credit for dreaming of getting rich so he can fix New Orleans and pass out cars like Oprah.

“Youth Knows No Pain”

“Like on 'Youth Knows No Pain' — we are the ones that should demonstrate, because we can take it,” Likke Li said. “We can pierce ourselves, take Ecstasy, dance all night and still go to work at our McDonald's jobs.” Despite the hedonistic sentiment in the song, the Swedish singer also admitted in hindsight her youth had repercussions. “I remember when I was 18-19 and feeling that I know it all,” Li said. “I always feel that I know it all. But that song is about realizing you don’t, and reflecting, ‘Boy, if I only knew what would follow.’”