Call it How Rihanna Got Her Groove Back: Clearly over her abusive ex, she leaves behind the tortured mood of 2009's Rated R in order to pound Jameson shots and table-dance at Coyote Ugly. "Life's too short to be sittin' round miserable," she sings on "Cheers (Drink to That)," and with these digital-pop party tracks, it's easy to believe her. When she's not power-clubbing with Drake and Nicki Minaj or dancing to warm island riddims, she's so serene, she even gets away with sampling Enya on "Fading." Maybe the good girl gone bad is getting better?

Photos: Rihanna's Best Looks

“My President”

Young Jeezy teams up with Nas on this track, in which he compare his own success with the idea of an African-American winning the Democratic Party's nomination in the 2008 presidential election. "When I pulled up in my car, that s--- was unbelievable to people in my neighborhood because they were like, 'We grew up with him. How the hell did he accomplish this?'" he told Rolling Stone. "I feel like it was the same way with Obama. I grew up all this time, but I've never seen a black man this close to running this country."