I can't seem to find any solid information on this game at all. And there does not seem to be any video for the credits anywhere (don't know if it even did include it). I remember the game being quite difficult back when I owned it, so I'm not even gonna try to beat the game on an emulator. So, does anyone have any clue at all who composed the music for this game?
Japanese title: ナイフエッジ ノースガンナー
MobyGames:
http://www.mobygames.com/game/knife-edge-nose-gunner
Also, I found a video of stage 5 and 6 here:
http://www.nicovideo.jp/watch/sm8850292
though, I don't know if it includes the credits (I can't watch it myself (registration needed?))
Thanks for any speculations!