Girls Aloud - Sound of the Underground
Girls Aloud's first single, release after their win on Popstars: The Rivals.
Girls Aloud were formed through the show by a public vote which named the girl band as the winner ahead of their boy band rival, One True Voice.
The single spent four consecutive weeks at No. 1 and archived platinum status.
Take a look at the video for 'Sound of the Underground' and let us know what you think below...