Hi! Thank you for checking out our game, I'm watching your playthrough right now and taking notes!
I can answer a few things now though:
- The glitch you were experiencing is just poor performance. The Godot engine struggles a bit at that part of the level if you're playing in browser. The audio getting messed up is a side effect of the web version too (if you're curious, the web builds are single threaded so the audio processing is happening on the same thread doing everything, when one process chokes the others suffocate). The exe version has none of these problems, so it kinda slipped under our radar. I'm sorry you experienced these troubles, I'll see what I can do.
- The music is this one: https://pixabay.com/music/beautiful-plays-smooth-waters-115977/ the license is supposed to be permissive, this is the first time anyone reported a problem like that... and for only a very small portion of the VOD too, that's strange. You can theoretically use the linked Content ID license certificate to dispute any claims, although I have no idea what that process looks like for Twitch, it was primarily designed for YouTube videos.