Oooooooh well when I had to spoiler something for a review before I just linked to an image/text with the spoiler. Should do the trick.
And yes you appear to have stumbled onto a glitch! Welp, that’s not great. I’ll check the code and see if I can get a patch out since well, that is supposed to work.
I think you should be listening to the song while playing the game really. It’s really core to the story. Mute the piano music I just didn’t use the song because I lacked the rights.
EDIT: Patch is out, should be fixed.