Opening the book every time I get a piece of an outline gets old fast, and the "AAAHHHHH" when I completed one is overkill and sounds out of place, it makes me think of a jungle pyramid, not classical music.
you don't need to change your resolution for 22. Goto puzzle 6, click the mouse, and click the "x" in the lower left corner and the mouse will stay with you to the main menu, and into puzzle 22, where he drops and you get keyboardcat
It would be better were there a way to change quality, running linux with onboard graphics, the game was to slow at high quality, and I couldn't turn it down. the lag was so much, that it would register all the notes hit as misses.
I didn't start to get stuck until 22, then it was intermittent, and I suck at most puzzle games, so maybe this one takes a different kind of thinking, and if so, don't complain if you can't get a level, you probably just don't think right for these, ;)
 "Box Life"){kind=icon}
 "Musaic Box"){kind=icon}
 "Elements of Arkandia"){kind=icon}
 "Take Something Literally 2"){kind=icon}
 "Sushi Cat"){kind=icon}
 "Primary"){kind=icon}
 "Infectonator : Christmas Edition"){kind=icon}
 "Guitar Geek"){kind=icon}
 "The irRegularGame of Life"){kind=icon}
 "Kaleidoscope Reef"){kind=icon}
 "Aether"){kind=icon}
 "Hexiom Connect"){kind=icon}
 "Shoot the Messenger"){kind=icon}
 "Kongregate Chat"){kind=icon}