Sacred Trust / After You're Gone competed for the number one position in the Christmas week issue of the UK Singles Chart, and Girls Aloud came out on top with their song "Sound of the Underground". Girls Aloud later released their own version of "Sacred Trust" on the rarities disc of their 2006 greatest hits album "The Sound of Girls Aloud". "Sacred Trust / After You're Gone" debuted at number two on the UK Singles Chart on December 22, 2002, the same day that their rivals Girls Aloud reached number one with "Sound of the Underground". The single sold 147,000 copies compared to first week sales
Girls Aloud Will the Neighbours Say? Live", which took place in May 2005. The group also released its first DVD, "Girls on Film". Following their first tour, Girls Aloud began work on their third studio album, "Chemistry". The album peaked on the UK Albums Charts at number eleven and received platinum certification. The first single from the album, "Long Hot Summer" was released in August 2005. The single ended Girls Aloud's run of top five singles when it charted at number seven. The follow-up single from the album, "Biology" was released in November 2005. The song was critically acclaimed; Peter Cashmore of