Carrie Underwood

Carrie Underwood plays with different genres, moods and tempos for her most diverse album yet. "Mama's Song," a radio-friendly gem with a soft hook and a stunning string section, was written by American Idol judge Kara DioGuardi, who also authored the bold, hook-filled "Undo It." Though these two tracks have massive pop hit potential, it's the more understated songs that are so darn good, like vengeful little ditty "Songs Like This," soft ballad "Look At Me" and uptempo knee-slapper "Quitter."