So, if you spam really fast on a jukebox, with a music disk, it will play the music and start playing a new track every time you do it. It gets really annoying and loud after some time. It is the same with every music disk. Works in singelplayer and multiplayer (also on servers).
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Duplicate of MC-112245
You can also remove the jukebox after doing this. It will still keep playing all the tracks, till they are done.