"Mercy" is a song performed by Welsh singer Duffy, released as the second single from her debut album, Rockferry. Co-written by Duffy and Steve Booker and produced by Booker, it was released over 2008 worldwide to critical acclaim and unprecedented chart success. As Duffy's first international release, the song is credited with firmly establishing the singer's career and is now considered her signature song. "Mercy" received comparisons to Duffy's previous single, "Rockferry". Critical reviewers of "Mercy" noted similarities between the song to releases by Aretha Franklin, Dusty Springfield and The Supremes, as well as contemporaries such as fellow British singer Amy Winehouse. "Mercy" was nominated for several awards in 2008, including the Grammy Award for Best Female Pop Vocal Performance at the 51st Grammy Awards. Well received by the public, "Mercy" went on to become the third-best-selling-single of 2008 in the United Kingdom, with sales of over 500,000 copies in the UK that year. The song achieved worldwide chart success, with Duffy attributing this to the fact that "everyone is searching for liberty ... from themselves or from the world they’ve created around them" and "everyone would like to be set free". It is Duffy's best-selling single to date. Wikipedia [ - ]

"Mercy" is a song performed by Welsh singer Duffy, released as the second single from her debut... [ + ]