Blue are an English boy band consisting of members Antony Costa, Duncan James, Lee Ryan and Simon Webbe. The group originally formed in 2000 and has released three studio albums, All Rise (2001), One Love (2002) and Guilty (2003) that all peaked at number one in the United Kingdom alongside releasing 16 singles, over a four-year period. The group also worked alongside artists such as Stevie Wonder, Elton John and Lil' Kim. In late 2004, the group announced a hiatus and released their first compilation album, Best of Blue, on 15 November 2004.