This change can now be found in a dedicated mod for my various small tweaks.
Reverts the behaviour of the mineshaft elevator to its behaviour from the 2024 Halloween patch (v65 to v68), playing a random clip of groovy music by ZedFox.
The track is synced, so players using the same mod will hear the same elevator music track.
This should still work when installed client-side only.
If you want more than a bare-bones replacement of the elevator behaviour, try ButteryStancakes' HalloweenElevator for a more customizable experience such as elevator music depending on date, weather, etc.
You can leave any issues or suggestions on the GitHub, or reach me as "sciencebird" on Discord.