Thanks for playing and the feedback.
It looks like the music restarting may be a web export only issue, as I just tested and only get it there. I'll do some looking to see if I can find what is causing it. We've had music issues on web in the past, so I have an idea of things we can try to adjust. Thanks for letting us know!
We were very much inspired by (S)NES era Zelda games.
Good job getting to the boss. Beating a boss without taking a hit would be tough... Hmm, maybe when we implement difficulty settings we can add a super tough challenge mode where you only get 1 HP... or maybe just an achievement for not taking any damage.