Maturity is an essential quality if you're looking for someone to marry your daughter or manage your mutual funds. In a pop star, though, it can be a downright liability. For every Pink gone punk or Justin schooled on the pop-funk classics, there's a teenybopper who thinks growing up means trading in frisky dance-pop for Celine in Vegas. This Total Request lifer's ideal is a smidgen classier-probably Sarah McLachlan or something-but her trip through the '70s singer-songwriter canon reveals a transformation about as deep as the recent browning of her once-blonde hair.

Moore's as personality-free an interpreter as much of the material here deserves; she wrings every last bit of incoherence from Bernie Taupin's lyrics on "Mona Lisas and Mad Hatters" while her Alanisification of Carly Simon's "Anticipation" could turn a whole new generation on to the joys of ketchup. And just try listening to her version of John Hiatt's "Have a Little Faith in Me" without imagining the smooches-all-around closing montage from an episode of The OC. But the more adventurous material baffles her. She obviously has no idea what to make of XTC's "Senses Working Overtime," and her take on Blondie's stalker anthem "One Way or Another" is hopelessly brunette. Talk about getting back to your roots.