Girls Aloud by Louis Walsh until 2005 when Hilary Shaw replaced him. The new group competed with the boys' winning group, One True Voice to have 2002's Christmas number one single. Girls Aloud won the battle with their single "Sound of the Underground", produced by Brian Higgins and Xenomania. The song spent four consecutive weeks at number one and was certified platinum in March 2003. The song received critical acclaim; Alexis Petridis of "The Guardian" stated that "it proved a first: it was a reality pop record that didn't make you want to do physical harm to everyone involved in its manufacture".
The Promise (Girls Aloud song) theatre, where Girls Aloud watch themselves performing as a 1960s girl group on screen. "The Promise" was promoted through numerous live appearances, including a high-profile performance on "The X Factor", and served as the opening number of 2009's Out of Control Tour. The song was praised and appreciated by most contemporary music critics, who lauded the song despite it being unusual for Girls Aloud. "The Promise" was awarded Best British Single at the 2009 Brit Awards, the group's first win at the ceremony. "The Promise" is an homage to 1960s music, particularly Phil Spector's famous Wall of Sound technique. It