A very good music/bullet hell game.
The attack pattern generation works pretty damn good for a simple flash. The in-game graphics are pretty cool and the bosses we could play against were cool. Unfortunately, the generator generated a fairly easy pattern with lots of power-ups from 'Papillon' - The Editors. It got me into Overdrive Mode and even then it was easy to dodge the projectiles due to a fairly monotone pattern.
Also, I've put in the Final Boss music of Mushihimesama Futari (the hardest boss in a game so far) at 10.30pm (which is fairly late for me, you could say I'm a pussy) and still managed to survive without too much damage.
What I suggest is that you make a scale of how difficult the generator should make the pattern. This was clearly missing in the lite-version (haven't played extended yet, but I'm fairly sure it won't be there either).
Still, this is already a good start. It might be too early to judge because this game is still in development. Keep refining this jewel.