If you don’t know Duffy, chances are you haven’t been watching TV or listening to the radio. The female soul singer is like a sober Amy Winehouse with a song that might send Winehouse to “Rehab” if she wants to stay on top of the female, British soul-singer pack. Her single “Mercy” showcases the pop diva’s unique Aretha Franklin-like vocals. Listen to her take on Madonna’s “Borderline” after the jump!
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