Hi! Thanks for the compliment, I really appreciate that and I'm glad you enjoyed the game. Unfortunately many assets, music included, are "ripped" from other games (sadly, it was a common thing back in the day ^^"). You can find all the credits at the end of the game. If you want to know some specific tracks feel free to ask, and I'll answer you.
Viewing post in Theia: The Crimson Eclipse comments
I wouldn't have guessed that they were ripped, every track i came across is well placed and didn't seem out of place. you sir have a great taste, this has brought me beck to the early 2000s. I'm just sad that I didn't come across this sooner. also i don't know what's the big deal with ripped assets it's not like you're selling the game or the assets. you just made a free game for people to enjoy. its weird how the rules have changed over the years. again thank you for this awesome game.