"The songs on Zooropa are not classics but they are more experimental and interesting than classic pop songs. This is something we don't necessarily care to do anymore. We don't go down the road with a piece of music just because it's unusual. That's not enough for us now. We want something that's potent and some of these songs are not particularly potent."
- The Edge
U2 had planned to release the material for No Line On The Horizon as two extended plays, titled Daylight and Darkness, but during sessions in London in 2008 decided to compile the best songs onto one album.