Fourteen-note notation is a simple musical notation, used to represent the duration and pitch of notes. It consists of a specific symbol representing the duration of the note, such as a circle representing a beat, and several lines representing multiples of the duration. At the same time, the pitch of the note is represented by a number. The larger the number, the higher the pitch. This kind of simplified notation is often used for music education for beginners and the performance of popular songs.