If you've seen the current cover of Spin magazine or heard that catchy song 'Mercy,' which has appeared in a number of TV ads, you've been unknowingly introduced to Duffy, a 24-year-old singer from the UK who is taking The States by storm. Although she's been compared to 60s singers like Dusty Springfield, people have also matched her vocal style to that of Amy Winehouse -- although Duffy's fresh face and sweet demeanor would beg to differ. Check out the songstress' live in-studio performance of 'Warwick Avenue' from her debut album, 'Rockferry,' below and draw your own conclusions.