Quarth -- is it just about building?

Is it correct that Quarth was the last game for MSX produced by Konami? Do anybody know cheats, or the like for that game? I can't beleive that Konami ended its works by a spaceship playing like tetris? I think there may be some hidden tricks or something made by Konami inside this game... Finally, do anybody have a midi or mp3 files for the BGMs of this game? I have attached a midi file, but it's neither good nor suffiecient to me...