Girls Aloud discography Actually", and appeared on the re-issue of "Sound of the Underground". "What Will the Neighbours Say?", the group's second album, was released in November 2004 and produced four singles, "The Show", "Love Machine", "I'll Stand by You", and "Wake Me Up". Preceded by the singles "Long Hot Summer" and "Biology", their third album, "Chemistry", was released in December 2005. It is their lowest charting album to date, although it was still certified platinum in the UK. The following year, Girls Aloud released their greatest hits anthology, "The Sound of Girls Aloud", which included their twelve singles and three new songs,
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