DID A LITTLE WORK DURING my lunch break today on The Battle of Gilgamesh. Some of the notes are wildly out of tune but either a) they aren't that out of tune or b) it's so fast - in any case, it doesn't sound so bad to me.
I'll attach the music also so you can see what I'm working from here.
EDIT: I suppose a few notes on the music are in order. First, notice that there are 16th-note triplets in there. The version of my music driver I'm using doesn't allow for triplets, so they are translated into 32nd notes and the preceding 8th note is now an 8th+32nd. Also, I can't get 190 bpm, so it is at 225 bpm. I could put it at 150 bpm, but faster is probably better than slower.
Tommy did helpfully put some of the less-commonly-used notes' voice+value markings right there in the music, though sometimes they are wrong.
Coding in music when it has been arranged for the 2600 like this goes pretty fast. The hardest part is figuring out which parts, and how, to patternize.