"The Wanderer is the antidote to the Zooropa manifesto of uncertainty. Zooropa is about accepting this state of uncertainty, and The Wanderer presents one possible solution. Overall on the album, the key is learning to live with uncertainty, even allowing uncertainty to be your guide."
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.