The music in this game is really right up my alley, congratulations.
Joke aside, the generation seems to work pretty well, obviously I tried both ends of the spectrum, from reggae, soft folk songs and psychedelic rock to punk and power metal. And the game is fun to play, you got the controls and bullet types and speed very right as well, making it a delight to curiously test your different tunes.
An awesome project overall, well done.