For Christina Aguilera, it's been 10 years of hits...and a decade of being accused of oversinging. So prepare to be shocked by Keeps Gettin' Better — A Decade of Hits' four fresh tracks (two all-new, two remakes of her old tunes): The singer has banished melisma and belting from these electronic confections, and her chops sound just as hot set on simmer. The real curiosity is a ''Beautiful'' redo that imagines how John Lennon might've sounded if he'd lived into the age of electro. B+
DOWNLOAD THIS: Keep checking the singer's MySpace for songs from the new album
