Love the song
The rhythm was perfectly in-sync with the notes and the song was especially catchy! I think if more songs were put in then players can experience a full-blown adventure.
Since the arrow keys were the controls I had a little trouble getting used to them. It may have been better to use 4 keys in a line like "J", "K", "L", and ";". There should also be a difficulty setting if more time was put into it. This game felt like more of a demo than a real game.