This is the repository of the project:
GbaCretin/Mezz-Estate-NeoGeo-Audio-DriverGitHuban audio driver for the neogeo written in z80 assembly - GbaCretin/Mezz-Estate-NeoGeo-Audio-Driver
The way to format music is specific to this driver and there aren't any tools to compose music for the driver at the moment; but I plan to make one.
The driver itself still isn't complete, but it's somehow usable so it can be tried out...
(Sorry if I might get something wrong, I really am not used to forums)