Moreover, it is also of equal importance to know how to play by ear, which is being able to play a song just by hearing it. If you are really serious about playing the piano, you should go all the way to learn your craft. Thus, there are a plethora of resources online to assist you with learning how to read music. In fact, it is just like reading a book, once you understand the concept, and the more you practice reading sheet music, the easier it will be. Learning to read music is not hard to do. It is necessary if you ever want to play with other musicians in a band, to write a song, or to be able to play anything just by reading it off sheet music. One thing that all musicians, including piano players, should know is how to read music. 10+ Easy Rock Songs To Play On The Piano.