I love the doodle art style, and the game idea is cool! Unfortunately the controls felt a little unresponsive? Perhaps my keyboard was playing up, though.
Good job! Please check out my game if you get the chance.
I may have misunderstood the game? I assumed A S and D were the notes left to right, and it seemed as though I was pressing when the bars reached the line, and sometimes the notes would not be played, but maybe I'm just bad!