It’s certainly true you can find musical qualities in almost any noise, but “music” by definition is a purposeful structure or arrangement of sounds to convey an idea or emotion.

That is not to say that all music must follow some prescribed form or another, but the distinction between sound and music is, at a minimum, structure and intent.

And it is also possible to intentionally structure some sounds in a way as to be not music, or unmusic, which is the impression I get listening to Four Organs.

Structured noise can certainly evoke an emotion — in this case for instance, confusion and disgust, and likely this is intentional. It may be an artform but I don’t think the noise is meant to be musical so much as it is meant to provocate.