You don't first learn that ....from whichever the background you gonna landing your eyes sight on the notes? Likes the reading is good for you to sing, like the literacy good for your magic, or sing, Mantra? So the decision what you make yourself believe, how to learn to write the notes like a composers....its where you draw some basic ideas of notation. The music notation. 我會不會講英文? 不會，那時候... Do I know English that time? Not really. Those notation its a very quick recognition when you see, you know it. The testing purpose. Normally you learn the piano or the cello first..... Its like forever I learning the music, until one I got a cram lesson from my piano teacher on a suddenly learning the music theory. Its a quick things to cram everything in. Its not a big deal.