Wisdom from U2

Apparently U2 front-man Bono has collaborated with Eugene Peterson of "The Message" to deliver a nice criticism of "Christian Contemporary Music" (CCM) that goes beyond the standard criticisms of formulaic lyrics in code, chord repetition, and the like.  More or less, the question is the same that our Reformed/Regulative Principle brothers and sisters have been asking us for centuries; why don't you consider the Psalms?