The Greatest Hits Tour (Girls Aloud) a fabulous Sound of the Underground." The Greatest Hits Tour (Girls Aloud) The Greatest Hits Tour was the third concert tour by Irish and British girl group Girls Aloud, in support of their first greatest hits album "". Girls Aloud returned to Northern Ireland and the Republic of Ireland, having not performed there on 2006's . The band performed sixteen dates in various arenas across the United Kingdom and Ireland, making it their second arena tour. The Sound of Girls Aloud: The Greatest Hits Tour kicked off in Cheryl Cole's hometown of Newcastle on 14 May 2007 and concluding in
The Sound of Girls Aloud: The Greatest Hits on the UK Singles Chart. "The Sound of Girls Aloud" received positive reviews from critics, who praised it as a reflection of the group's success. The album entered the UK Albums Chart at number one, making it Girls Aloud's first album to do so. It also peaked at number nine on the Irish Albums Chart. In 2009, the International Federation of the Phonographic Industry (IFPI) recognised "The Sound of Girls Aloud" as one of the nine albums that year to sell at least 1 million units in Europe. On 6 October 2006, Girls Aloud announced that they would release their