Interesting game. The web version does not work the music part for me..
I felt the detection of hit or miss was a bit weird. It says you must hit it close to the bar, so I would expect that hitting exactly on bar would give the most points, but it was always a miss..
Other than that, the difficulty spike from the first to the second song... omg. It went from a calm game to a frenetic one. I guess it fits the story parts in which they appear, but I don't know, it felt the spike too steep you know?
Congratulations on the game, you even added voice acting! (which is very well done, btw)