Nexan-s_Custom_Resources/assets/minecraft/models/item/music_disc_mellohi.json

{
  "parent": "minecraft:item/generated",
  "textures": {
    "layer0": "minecraft:item/music_disc_mellohi"
  },
  "overrides": [
    { "predicate": {"custom_model_data": 1}, "model": "custom:item/music_disc_keralis"},
	{ "predicate": {"custom_model_data": 2}, "model": "custom:item/music_disc/music_disc_pixlriffs"},
	{ "predicate": {"custom_model_data": 3}, "model": "custom:item/music_disc/music_disc_ex"}
  ]
}