Stay Another Day who would be "rivals" and compete for the Christmas number one single in 2002. Girls Aloud competed against One True Voice, managed by music producer Pete Waterman. Girls Aloud recorded a cover version of "Stay Another Day" as their debut single, with Cheryl Cole providing lead vocals. After Girls Aloud recorded "Sound of the Underground", "Stay Another Day" was instead released as its B-side. The release was originally meant to be a double A-side, and it is often mistakenly labelled as such. "Stay Another Day" was performed on "This Morning", "Top of the Pops" and "Top of the Pops Saturday"
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