I mean specifically the more avant-garde stuff based around things like feedback loops, distortion, and white noise, like Merzbow or the Incapacitants. I personally consider it valid as music, but exploring different techniques and sensibilities than "normal" music.
Any noise groups/musicians y'all like?
I once went to a Melt Banana concert having no idea what i was getting myself into. That was intense, but fun. I love it when there's just wave after wave of harsh sound washing all over me, feels like giving the inside of my ears a good scratch.