This is pretty good! It has a few minor issues, but I don't consider them significant enough to hit reject:
- The Sawtooth notes are slightly off, but they still sound okay as-is, which is why I considered it a minor issue. Here is an image showing a comparison between the wrong (on the left left) and the correct (on the right) notes.
- A few more bytes could be saved by using Label Loops in the percussion channel, and looping the first two channels a bit differently, as the first five notes are repeated twice per line. On a similar note, changing r2^2 to simply r2 and doubling the looping amount would save a few more bytes as well. It's nothing major, however.
- The original samples folder was named SOM, which could create conflicts since the same acronym can be used for Secret of Mana. I changed it to reflect the name of the song instead.