"Hung Up" is a song by American singer Madonna from her tenth studio album Confessions on a Dance Floor (2005). Initially used in a number of television advertisements and serials, the song was released as the album's lead single on October 18, 2005. Written and produced by Madonna in collaboration with Stuart Price, "Hung Up" prominently features a sample from the instrumental introduction to ABBA's single "Gimme! Gimme! Gimme! ", for which Madonna personally sought permission from its songwriters, Benny Andersson and Björn Ulvaeus. This is one of the few times Andersson and Ulvaeus have given permission to sample one of their songs, following "Rumble in the Jungle" by the Fugees and "Fly With Me" by 98 Degrees.

Confessions on a Dance Floor is the tenth studio album by American singer and songwriter Madonna. It was released on November 9, 2005, by Warner Bros. Records. A complete departure from her previous studio album American Life (2003), the album includes influences of 1970s disco and 1980s electropop, as well as 2000s club music. Initially, she began working with Mirwais Ahmadzaï for the album but later felt that their collaboration was not going in the direction she desired. Madonna took her collaboration with Stuart Price who was overseeing her documentary I'm Going to Tell You a Secret. The album was mainly recorded at Price's home-studio where Madonna spent most of her time during the recordings.