Rockferry is the Grammy and Brit Award winning, debut studio album by Welsh singer Duffy, first released on 3 March 2008 by Mercury Records in collaboration with Universal Records in the US and with Polydor Records in the UK. The album became a worldwide success, becoming the best selling album in the UK in 2008, with 1.7 million copies sold. The album was the fourth best selling album of 2008 worldwide. Prior to releasing the album, Duffy appeared twice on Jools Holland's music show, performing the tracks "Mercy", "Warwick Avenue" and her version of "The First Cut Is the Deepest". .