Imagine Amy Winehouse without the crack. With her gravelly voice, jazz background and command of her basic faculties, 23-year-old Duffy is currently topping the British charts with a track that comes off like an AM-radio classic.

"Mercy" is an infectious retro-pop assault that sounds like Dusty Springfield jamming with The Who. If you've always wanted an excuse to buy a crushed-velvet suit and ride around on a Vespa, this might be your window.