Changing the "Jukebox/Note Blocks" volume while a record is playing has no effect until the record is finished.
Changing sound volume does not change playing music disc volume.
Music Doesn't Stop if In-Game Volume is Turned Off
Music disc still plays in Jukebox even when Music is OFF and Sound is OFF
Juke Box bug
Music Disk plays music even when music&sound levels are at 0%
Bug sound the disc: wait,
Jukebox Doesn't Stop
Jukebox stops playing music after turning music sound all the way down and up again
Jukeboxes play at the sound volume for effects until you change the music volume