The song : https://www.youtube.com/watch?v=9CdcoKJuMb4&ab_channel=OPcrotte
The code is a copy of FasterItemDropship mod that additionally let the song being fully played unless you buy more items
FasterItemDropship mod's page : https://thunderstore.io/c/lethal-company/p/FlipMods/FasterItemDropship/
no need to use FasterItemDropship mod for it to work (only recommand using it if it's been update after 1.2.1)
IF YOU USE THE FasterItemDropship MOD :
In config file set MaxLandDuration to 70 and LeaveAfterSecondsOpenDoors to 70 so you have the full song