Junichi Kawaguchi
Junichi Kawaguchi (also credited as Jun-ichi Kawaguchi, 川 口淳一) is credited for programming MIDI files for song disks and Roland demo tracks.
The following profile is included with Roland's GS demo package:
Jun-ichi Kawaguchi is an arranger/composer/keyboardist who is currently involved mainly with studio recording. He has produced compositions and arrangements for quite a few well-known artists. Within Japan, he has also played an important role during numerous demonstrations, including those for Roland's S and JV series, at musical instrument fairs and other special events.