SPC Converter for MuseScore is a plugin for the open source notation software MuseScore. It allows you to write a score in musical notation using MuseScore, then export it as a text file which can be compiled by AddMusicK and inserted into an SMW romhack.
For a full description of how to use the tool, please see the readme included in the *.zip file (also available in the linked repository on GitLab).
This is cool but I wish you could use other things other than MuseScore like a midi. I also wish that the .txt wasn't just 1 line because it's not easy to edit stuff like the instruments if you don't use the header because I don't really know how to use the header and I have to organize the txt by myself to edit it
I found out how to change the instruments without going into the .txt, but it would still be nice if the .txt was organized better