as it is known that deflemask almost never saves files (i wonder why, saving and opening files are essential features from a tracker, isn't it?), but instead seems to (apparently) export vgm files relatively fine, i scratched some notes there, exported to vgm, converted to hexdump, started doing some experiences on that, and convert back and testing in and iterative process, but i confess i didn't spent too much time in it - used this script for converting vgm to hexdump: https://pastebin.com/raw/ZAzyWu6W - and this for playing the hexdump (and get the edited vgm converted back): https://pastebin.com/raw/2fQZfhhn - using a makefile like this ( https://pastebin.com/raw/LmmJkDUW ) in the same directory, we can use an ide (like Geany or any other) just like a tracker - the difference is that we are editing an hexdump instead of notes, effects and etc.