That you can create your own discs, with a "disc creator," that uses like 3 pieces of glowstone and 2 emeralds and 3 more, and a jukebox in the middle. just a weird idea honestly. :) :)
Well if you ask me this sounds like the best mod ever!
It sounds pretty cool and I would make a song in a disc that is "*ghast*" just cause I like the sound of ghasts
Ohohoho! I'm currently working on that feature for my ImmersiveMusic mod. Stay tuned! :)