Rockferry is the debut studio album by Welsh singer Duffy, released on 3 March 2008 in the United Kingdom by A&M Records. It was released in the United States by Mercury Records. Taking four years to record the album, Duffy worked with several producers and writers including Bernard Butler, Steve Booker, Jimmy Hogarth, and Eg White. Primarily a soul recording musically, Rockferry is composed of ballads, torch songs, and up tempo songs in the style of 1960s pop music. It was well received by music critics, who praised the record's musical and lyrical depth and occasional darkness, Duffy's vocal performance, and the record's contemporary instrumentation and production which created a warm sound. Music critics favourably compared Duffy's work on Rockferry to the music of Dusty Springfield and Duffy's contemporary Amy Winehouse.