I do think that's a pretty interesting viewpoint--and as I was writing up my initial comment here, I wondered if anyone had ever tried to push beyond the boundaries of music as an art form to challenge the common conceptions or ideas of what it was. I'm inclined to think that yes, it still falls under music, and can still be defined as music, but it just becomes something that is evaluated by taste/preference. (Perhaps not positively.) I mean, after all, going by this notion, plenty of artists have become quite known figures because they broke the mold of what was deemed acceptable or normal, right? So if they can do it, who's to say Schoenberg was just ahead of his time? (Still ahead, too, as I agree with your assessment--that video you linked to is kind of disjointed and jarring.)

Evy/Claw