"Part of Me"

The Official Katy Perry Divorce Anthem is a predictably effective piece of angsty dance-pop - it was co-produced by Dr. Luke and Max Martin, after all. It's also just plain predictable. The minor chords signal "dark, serious"; the lyrics supply tabloid bait ("You can keep the diamond ring/It don't mean nothing, anyway"). But Perry is best at fluffier stuff; she lacks the gravitas, and the lung-power, to drive the song home. Russell Brand: you can rest easy, mate.

Listen to "Part of Me":
Related
Photos: Katy Perry's Best Looks
Sex, God & Katy Perry: Rolling Stone's 2010 Cover Story