Thank you so much for giving this detailed explanation. I managed to find some time to make a game. There's really not much to it, but I love making soundtracks, so that might give the game some charm:
I really appreciate the help (my HTML knowledge is abysmal!). I'm sorry I didn't have enough time to submit to your game jam, but I will be sure to make another game in the future. I always love having an excuse to make another soundtrack! By the way, I'm definitely going to post again on this thread if I come up with any new interesting ways to use <audio> tags in a bitsy game.
All the best