i was wondering if something like this existed. A game where you are shown a note or chord in a sheet music and you have to press the correct key. you are then scored by how accurate and how quickly you completed this task. i can think of this being done in two different ways, either like a videogame with a plug in keyboard or like an external tuner like machine that recognizes the notes aurally. in a videogame it would be a little similar to the way rhythm games work such as DDR, IIDX, pop'nmusic, guitarhero except it wouldn't test rhythm but rather your ability to accurately read notes and hit the corresponding key. i think this would be a popular and fun way to improve reading skills.