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
Chemistry (Girls Aloud album) on 2 December 2005 and in the United Kingdom on the following Monday. In addition to the standard edition of the album, a limited edition with a bonus disc was also released. The bonus disc contains Christmas music, including covers and original songs produced by Xenomania under the moniker Festiv Gifts. The songwriters also took on Christmas-related pseudonyms. In Australia and New Zealand, the album was released on 20 February 2006; however, it failed to generate much interest. Additionally, "Chemistry" and other Girls Aloud releases appeared on the US iTunes Store on 26 June 2007. The album's first single was