Instrument performance tracking systems and methods

A musical instrument play tracking system comprising:

• a device displaying a music score of music, which a player wants to play with a musical instrument, on a display and creating play data for musical instrument play of the player;
• and
• an application server including at least one processor, which tracks a play position on the music score on the basis of the play data, and operating a mobile application that support a musical instrument play platform, wherein the at least one processor includes:
• a landmark measure recognizer recognizing multiple measures in a predetermined number of staffs from a top staff in the musical score displayed on the display as landmark measures;
• an important information extractor extracting important information including the play data and the frequency and length of notes in a certain measure among the landmark measures;
• a similarity calculator calculating similarity between the important information of the play data and the important information of the certain measure among the landmark measures;
• and
• an activator activating the certain measure on the display in accordance with the similarity such that the play position is easily and visually located.