"So where does all music come from -- be it hip-hop or rock 'n' roll? I don't know. But I do know that all music is praise. It's praise to the god of your making. Which, in the case of a rock star, might be oneself. Or a woman. Or an idea."
- Bono, 2004
'40' from the War album almost was never recorded. The band (minus Adam Clayton who had left the studio) had gone over their booked studio time, but convinced the studio manager to let them record '40'. It has closed many show since. The Edge plays both electric and bass guitar on the song.