"I'm into horizontal relationships, not vertical ones. It's why I'm in a band. It's why I'm married. It's why I would not like to be called The Boss."
- Bono, 2015
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.