International Standard Music Number

The International Standard Music Number (ISMN) is a unique identifier assigned to notated music, similar to how the International Standard Book Number (ISBN) is used for books. The ISMN system was developed to provide a way to identify and catalog music scores and notated music publications, facilitating their distribution and sales. An ISMN consists of 13 digits and is typically formatted as follows: "979-0-xxx-xxxxx-x".