Thank you so much for your feedback!
Glad to see you playing my game on Game Boy and liked my game :)
I don't consider the music an asset because it came with GB Studio and in that frame a lot of people used and no one wrote that it's an asset.
Yes you are not the only one to have used existing musics under Gb Studio, I also mentioned them, but no problem, me it is the first game where I made the music ;)