Such tactics are necessary for piped music in pubs…

Florian Schenider interviewed in Mojo Sep 2005 issue:

IS IT TRUE THAT ON THE AUTOBAHN US TOUR YOU USED TO CARRY SCISSORS TO CUT THE WIRES IN LIFTS PLAYING MUZAK?
“Yes in those days there were more cables than nowadays, where everything is panelled. One of the computer engineers who worked with us on the sequencers was a specialist in identifying where these cables were... We want to listen to the elevator. It’s more interesting to listen to the sound of the elevator – zwiiiit, pwhrrrr – than to some muzak, which is sound pollution.”