Just forget that music discs were made by real people, let's get creative with some mobs. Science music discs have a mechanic that has to do with creepers, then most of them are made by creepers. I don't really know if "Mellohi" and "Stal" are made by villagers, but I wanted to be made by villagers. If you have any ideas of who really made Mellohi, Stal, Cat, and 13, let me know!