💽 Jukebox Song

caution

Due to the fact that Minecraft's registry becomes immutable once registered, you will need to restart the server in order to apply any new modifications. However, you can register a new song in real-time by modifying the configuration ID.

jukebox-songs:
  default:credits_music:
    sound: minecraft:music.credits
    length: 100.0  # music length in seconds
    description: "Credits"  
    comparator-output: 15
    range: 32

Just add the minecraft:jukebox_playable component, and your item becomes a playable music disc

items:
  default:music_stick:
    material: stick
    data:
      jukebox-playable: default:credits_music

If you don't know how to customize a sound, please refer to this page.