Very nice
Your choice on what instruments to use really gives it an intense feel, like everything's riding on it. But also, the I give you many thanks for allowing JonBro to use this in Riddle Transfer, because that made that part of the game have this feeling even more than the story alone would have.
Music, in my opinion, makes a game even more than graphics. Poor music and people will likely be unable to feel the game. This however, does NOT suffer this :D The somewhat "random" feel it has at times only makes me even more jittery to not make the wrong move (This would be good in a New Age "Shadowgate" type of game.)