"They continuously experiment and try different ways of playing and arranging the songs, until the very last moment. The guitar overdub on 'Mysterious Ways', for example, went down after the mix was finished."
- Robbie Adams, engineer on the Achtung Baby recordings
did you know
In late 2004, "Mercy", an unreleased track taken from the How to Dismantle an Atomic Bomb sessions, surfaced on the Internet through a fan who had been given a copy of the album containing the extra track. The track is of less than standard audio quality, but managed to become a favorite on fan websites.