Help With This Music

Ok this has been pissing me off for days now.....What is the song in the intro of GTHD....its a kick ass song that our band would like to cover.....unless its just literally a min long in that case thats retarded.....but if anyone could at least tell me the artist id be happy.:banghead:
If you go to the "user manual" on the main screen then scroll to the last page it says:
Opening music: Nittoku Inoue