ubercooldave:
wow, now i am interested into what you listen to!
as long as there are instruments and no one died as a result of the music it cant be that bad...
Hehe - very loosely it's a form of improvisation that sometimes goes under the not very helpful term "electro-acoustic improvisation" EAI for short - think atonal, austere and very abstract (well all music is abstract really) imagine the musical equivalent of Mark Rothko or maybe Barnett Newman's paintings.
There are some instruments but they aren't played/used normally, as well as the use of equipment to make sounds, e.g. samplers (without any samples), mixing boards (with the output fed into the input, to create a feedback loop). I'm being very general, as this form of music is constantly changing and challenging itself and is genuinely innovative.
A good CD to checkout would be Sachiko M/Toshimaru Nakamura's "Do" even though it's getting on and doesn't represent what's going on now, its still a brilliant record but a real mettle/patience tester for some.
I am not aware of anyone being harmed or otherwise listening to this music, so far.