U2 - With Or Without You

The Edge used a distortion device called an "Infinite Guitar" to create the wail. It was invented by Michael Brook, who The Edge worked with on the soundtrack for The Captive. Brook created the Infinite Guitar by replacing the pickup on a guitar with a magnetic device that vibrates the strings. Co-producer Daniel Lanois told Mojo magazine January 2008 about the recording of this song: "'For 'With Or Without You' we had the rhythm and the chords then we were testing Michael Brook's Infinite Guitar Invention. I asked Edge just to play a little something with it. He did two takes and those are the ones in the ultimate mix of 'With Or Without You.' Beautiful sounds, stratospheric."