"Songs of Innocence and Songs of Experience became the model for what we were doing... you get to go back and rediscover that innocence of being in a band, those joyous melodies and write about the things that formed you."
- Bono, 2014
did you know
U2 hold the record for the most powerful live sound system of all time. It used over a million watts - capable of killing someone if turned up to full.