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".
Girls Aloud mainstream British pop could get in the noughties, play them this." In 2009, "The Times" included 2007's "Tangled Up" at number 62 on a list of the decade's best pop albums, while the "Daily Mail" listed it as the twentieth best album of the decade. MSN listed 2005's "Chemistry" as one of the decade's best albums. Girls Aloud are also notably one of the few British reality television acts to achieve continued success and longevity. According to "The Times", Girls Aloud are the highest-earning UK reality television stars, having amassed a fortune of £25 million by May 2009. The figure