"The desert was immensely inspirational to us as a mental image for this record. Most people would take the desert on face value and think it's some kind of barren place, which of course is true. But in the right frame of mind, it's also a very positive image, because you can actually do something with blank canvas, which is effectively what the desert is."
- Adam Clayton on the Joshua Tree
Starting from Summer 2007 to Summer 2008, U2 had written and recorded 50-60 songs for a new record with Brian Eno and Daniel Lanois. 11 of these were released on 2009's No Line On The Horizon.