When exporting to MIDI file, the MIDI file is corrupted. For now, I export it in Guitar pro 5 format, read it in Musecore 3, reassign MIDI instruments, and export it to musicXML or general purpose midi file. This issue .song file and .mid file are here. https://nekomusume.softether.net/nextcloud/index.php/s/fnwYwdtKN6srM5W Blackcat