This is very authentic to the GB and the song is a banger. I stayed in the title screen for a lil while because I thought that if I started the game it would stop playing lol.
It's a very small experience but I did enjoy it. The music combined with the attack made me feel like I was whipping dudes in Castlevania, was just the right vibe. Shame it wasn't a bit longer, but I know how bad the crunch gets at the end. Good job!