An essential part of playing the piano is learning to read music. Learning a difficult song by ear can be made a hundred times easier by learning to read sheet music. Music is read by lines. There are 5 lines on the music score (2 sets of these on the piano). On the treble clef, the first line from the bottom is E, the second is G, B, D. A good way of remembering it is Every Good Boy Does Fine. The spaces are F, A, C, E. FACE. On the Bass clef, the lines go as G, B, D, F, A. Good Boys Do Fine Always. The spaces are A, C, E, G. All Cows Eat Grass.
Music Originated a long time ago. The first notation were random dots on a page. We cannot tell the pitch of them. Slowly, it developed into one line, then the grand staff we see today.