If you're into music YouTube, you've probably heard about Angine de Poitrine: Rick Beato, David Bruce, David Bennett, Charles Cornell and others have made videos about them. They use the quarter-tone scale, 24-tone equal temperament. I don't love their stuff, but pop music is so locked into 12-TET that anyone who can break out of it is worth supporting!
(2/2)
https://www.youtube.com/watch?v=91QWp6Ygx7c
