"Rick Rubin has a larger looming presence on this album than his 'thank you' deserves. He asked 'Why can't more people cover U2 songs?' And it's because, with all the great sounds and arrangements, you can forget that there isn't a song there."
- Bono on Rubin's influence on Songs of Innocence
Bono sung in the 1985 Band Aid, but wasn't allowed to send his voice over through tape to be allowed in the 2005 Band aid 20. He had to fly over and perform for his position.