Through a combination of zealous righteousness and post-punk experimentalism, U2 became one of the most popular rock & roll bands in the world -- equally known for their sweeping sound as for their grandiose statements about politics and religion. The Edge provided the group with a signature sound by creating sweeping sonic landscapes with his heavily processed, echoed guitars. Though the Edge's style wasn't conventional, the rhythm section of Larry Mullen, Jr. and Adam Clayton played the songs as driving hard rock, giving the band a forceful, powerful edge that was designed ...