Independent learning
Playing the piano with notes allows the player to learn new pieces without having heard them played by someone else first.
Accuracy
Reading the notes tends to result in greater accuracy in decent music reproduction.
New music
When composers write new music, it can only be played for the first time by a musician who can read the notes. Those who only play for the ear can not take advantage of the opportunity to play a composer’s new piece.
Interpretation
Pianists who learn music by listening to others play it will often be influenced by other people’s artistic interpretations, while those who learn from notes will have an easier time developing more unique interpretations.
Speed
A skilled note reader can play new music quickly or even in sight, while those who play for the ear always need to hear a piece first (and usually need to listen to it several times).
Theory and composition
Pianists reading the notes will develop a richer understanding of notation, chord structure and other aspects of theory and composition
Music-making ensemble
Pianists who read notes can participate in classical ensemble music production, which requires playing from a point without deviation for the sake of coordination with the other players. When it comes to playing any musical instrument, there are two ways to learn new pieces of music: through the ear (rote) and experiment, or from notes. The piano is an instrument that is often played by the ear, and many professional musicians go through it without learning to read notes on sticks. However, there are many benefits to mastering the skill of reading music notes on a printed page, especially when it comes to an instrument that is central to Western music such as the piano.
Source:danspela.com