the biggest multi-system chiptune tracker ever made. Please visit the project website or view the source code.
The package includes demo music, instruments and sound samples at /app/share/furnace due to how the file system is sandboxed these can be difficult to access.
You can open their real location in the file manager by running:
flatpak run --command=gio org.tildearrow.furnace open /app/share/furnace