What is this "augmented reality" of which you speak?
Saw them in Detroit MI at Ford's auditorium 1973 or 74. They played tunes from Meddle and DSOM. Indoor venue, show was in quad or some kind of surround sound. During one tune part of Roger's rig blew which resulted in a loud "AWWWW F$%&!!" and then an unscheduled intermission. I just remember thinking how can four men make so much sound?