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

“Help Me”

Joni Mitchell wrote and recorded this song for her album Court and Spark, but she had to switch from her regular band to make the song sound exactly the way she wanted. "I had attempted to play my music with rock & roll players," she told Rolling Stone. "They’d laugh, 'Awww, isn't that cute? She's trying to teach us how to play.'" Mitchell switched to a jazz band, Tom Scott’s L.A. Express, and scored the biggest hit of her career in the process.