Wowie-zowie, that's true, music should play! I can reproduce it too very consistently with my english copy.
EDIT: and THIS is where it gets weird, playing the original EXE without DREAMM consistently yields no music as well. But this is not a collective allucination or some kind of Mandela effect, music is really supposed to start there... I should try to see what happens in the disassembly.
EDIT 2: ever weirder, the issue is not there when running the game with the IDA debugger with the windowed flag, nice 🙂