Ist U2 wirklich ihre Religion?

There's a relatively new scholarly book by Brigitte von Dorner called "U2 ist ihre Religion, Bono ihr Gott: Zur theologischen Relevanz der Rock- und Popmusik am Beispiel von U2." Obviously, it's in German. Table of contents here. It deals in general with rock music's connections with spirituality (drawing on Rene Girard) and then turns especially to U2 in its last half with a few song analyses, a chapter on Bono, and coverage of the Vertigo Tour.