Jazmine Sullivan's crowbar-wielding 2008 hit, "Bust Your Windows," was a tsunami of R&B man-hate. On her follow-up disc, the 23-year-old diva plays a little nicer, adhering to the Mary J. Blige school of gritty, nuanced hip-hop soul. "10 Seconds" luxuriates in the moment before a lovers' spat goes Hiroshima, and on the Eighties R&B nugget "Don't Make Me Wait," she comes on to a dude while testing his pop-music IQ. On "U Get on My Nerves," a conciliatory sequel to "Windows," Ne-Yo plays her ex, calling to see if she burned his clothes too. "I can have your shit Fed-Ex'ed in the morning," she sings. Look how she's grown.

Listen to "10 Seconds":

Gallery: Pop Divas on the Cover of Rolling Stone

“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.’”