This weekend marks the 40th anniversary of the formation of one of the biggest rock bands of all time: U2.

On September 25th, 1976, Larry Mullen Jr. posted a note on the notice board of Mount Temple Comprehensive School in Clontarf, Dublin, looking for band members – and the rest, as they say, is history.

To mark this momentous occasion, we thought we'd test your knowledge on one of the band's biggest hits, and undoubtedly of their best-known songs, 'One'.

Think you know all the lyrics off by heart? Step this way, so... and remember, every time you cheat, you make Bono cry.