While U2 have since become one of the biggest rock acts in the world, Bono once recalled how their early years were spent performing terrible covers.

In the midst of what might be a musical rebirth, U2 has delivered an unexpected EP. Here is what you need to know.

“At the time it sounded like a foreign language,” Adam Clayton said in U2 On U2, “whereas now we understand how it works.” ...

U2's popularity outstripped their US chart success for a while. "Pride (In The Name Of Love)" helped to change all that.

U2's surprise EP, Days Of Ash, is a return to the band's glory days with its topical lyrics and punk-rock music.