Sound of the Underground (album) written with the aim of launching their own girl group. The song was originally recorded in 2001 by London girl group Orchid, who disbanded before gaining a firm record deal. It was chosen by Girls Aloud's manager Louis Walsh as their debut single. "Sound of the Underground" was 2002's Christmas number one single and spent a further three weeks at number one. "Sound of the Underground" and another Xenomania production, Sugababes' "Round Round", have been called "two huge groundbreaking hits", credited with reshaping British pop music for the 2000s. Following the single's success, Girls Aloud proceeded to begin recording their
Girls Aloud "The Guardian" labeled it "the best pop single of the last decade". The release was followed by a cover of Dee C. Lee's "See the Day", released in the Christmas week of 2005., following this they presented one-off TV Special, Christmas Mania, on ITV, where they sang songs taken from their Christmas album. Girls Aloud won the Heart Award for the single at the O Silver Clef Lunch. The group travelled to Australia and New Zealand in February 2006 to release "Biology" and "Chemistry". Despite, a one-week promotional tour, "Biology" peaked at number twenty-six on the ARIA Singles Chart, failing