It's no exaggeration to call 2005 a fascinating one on the Official Singles Chart, as this guide to 100 songs turning 20 next year really proves. This was the year that choreo-slaying girlband ...

In 2025, a number of albums will celebrate milestones. Of those which came out in 2005 and are turning 20, we picked 20 titles that still enjoy their hearing, still shape the way we think about song.