"U2 were born in the context of a live environment. it was our relationship with our audience that gave us our belief in ourselves. It was certainly early on. When we played live something happened. When it went off, something seriously went off in our shows, even in our early club shows."
- The Edge
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.