"Bono came in with these dark lyrics, and we kind of felt that the music didn't really match the lyrics. So we tried to turn the music on its head, to match the lyrics."
- Declan Gaffney, who co-produced the song Raised by Wolves
Many musicians have been influenced by the work of U2. There are several cover versions of U2 songs by bands such as Pet Shop Boys, Pearl Jam and The Chimes, and musicians such as Cassandra Wilson, Joe Cocker and Johnny Cash.