A few from the top of my head...
Bizarre Uproar - 13/10/06 tape (sound of... well you can guess)
Brion Gysin - Bruits Du Beaubourg LP (sound of building yard)
Walter Marchetti - Per La Sete Dell'orecchio track (on the album of the same name, sound of rocks thrown into a pool)
But there's lots more of course. A lot of straight, un-edited field recordings ("phonography"). An then there are the various Hermann Nitsch Aktion-recordings, there's some music there also but most of it is sounds of "action", heh...