
gecko zzed
Grumpy Mod
nor was he thinking of the air conditioning system that most people must hear when they experience 4'33" in an auditorium. None the less, it's there and it might have some chordal structure to it.
Actually, I think that though he may not have considered air conditioning explicitly, it would have not been out of place in the 'suite' of noises he wanted people to hear.
But that leads me to another stray thought. I once worked in the loading dock of RCA when it had a plant in Sydney. Right next to the loading dock was a plant room that processed vinyl for processing. It used to have this hypnotic hum, probably an A, that went on all day. I used to find myself humming along to it and creating vague Indian harmonies and melody lines to this tambour-like background. It whiled away the time.