"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
The song 'Zoo Station' is about the Zoological Gardens in the middle of Berlin, which was a train station and hangout for "societies' undesirables".