Programs used to open the files:

Famitracker (0cc) - http://hertzdevil.info/programs/
Milkytracker - https://milkytracker.org/downloads/
OrgMaker - http://rnhart.net/org210x.zip
Pxtone - http://studiopixel.sakura.ne.jp/pxtone/wp/wp-content/uploads/2016/02/pxtonecollage-v0925.zip