/mu/ used to be a lot more interesting, but yeah. Nowadays it's mostly an Anthony Fantano discussion board, but I remember talking up some really interesting artists on there a few years ago. People would trade Death Grips demos for Monkees stems, and a number of relatively large artists used to frequent the board too. My fondest memories were chatting up Iglooghost who'd visit every so often, posting links to demos that sounded like keygen music from another planet. Dude didn't even need a tripcode: everyone knew his stuff when it came around.
There were even decent releases made on /mu/. Specifically, never having been on 4chan myself, I've heard of that scene by the way of Loli Ripe—whose music is basically j-core a-la DJ Sharpnel, but with more breakcore. I only wish that they would better normalize the volume between tracks.
IIRC there was also something vaporwave-related (predictably).
