"I know U2 go into every album like it's their last one but even more this time I wanted the people around me that I loved to know exactly how I felt. So a lot of the songs are kind of letters, letters to Ali, letters to my sons and daughters, actually our sons and daughters."
- Bono on Songs of Experience
did you know
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.