Cheryl (singer) first contestant to qualify for the girl group, and was joined by Nadine Coyle, Sarah Harding, Nicola Roberts and Kimberley Walsh to form Girls Aloud, following the final public vote. The group's debut single "Sound of the Underground" peaked at number one on the UK Singles Chart, becoming the 2002 Christmas number one over boy band One True Voice's "Sacred Trust / After You're Gone". Girls Aloud hold the record for the shortest time between being formed as a band and achieving a number one single. Girls Aloud released their debut album "Sound of the Underground" in May 2003, which
Girls Aloud songs inspired by 1980s electropop, while also exploring retro styles. "The Promise" is a 1960s Spector-influenced number, while "Rolling Back the Rivers in Time" was compared to Burt Bacharach. Girls Aloud were one of the few pop acts to achieve continued success and longevity throughout the mid-2000s while R&B and rock music became more popular. In a review for the group's 2008 Tangled Up Tour, David Pollock of "The Independent" noted that "Girls Aloud remain confidently the only pop show in town." "The Times" stated, "Not since Abba and Michael Jackson has pure pop been so unanimously praised." Girls Aloud's