This mod adds the new music discs from update 1.21 to older versions of the game, currently it only supports forge but I will add support for more versions hopefully, you can get the discs from villagers in 1.20.1 you get them from a villager with a jukebox as a jobblock but in older versions you get them from cartographers. This mod is forge ONLY but will work with some things to get it to run on fabric
