To set the tone; here's the title:

There's some applied restrictions:
No effects whatsoever are used; and filesize must be minimal in order to fit in the total 16kBs of the NROM format; together with the rest of the game. That means short patterns, and extensive reuse of the same. I expect a vs. battle to be over in a minute or one and a half, so the length of the full loop feels allright.
Pitch changes in instruments are a technical slight maybe, so it's used sparingly in case it doesn't get implemented in the driver. Main melody is in sq1 sq2, so if any tonal SFX cuts the music, it'll be in supporting channel sq1.
There's a conversion phase. Editing the song after the conversion to the game's native engine will be more of a pickle, so i'd appreciate any input, reassuring words, or troubling concerns you have.
To get things started: Compared to often rudimentary sound of many NROM games, it holds up well (and should, since this is post-market development). But what about the musical properties?
Thanks!