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The Library of Congress > U.S. ISMN Agency

About the ISMN

The International Standard Music Number (ISMN) is a unique identifier for notated music whether published in print, online, or in other media. The ISMN is used for inventory, ordering, billing, rights assessment, information retrieval, library circulation, and inter-library loan.

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Advantages of ISMN

The ISMN allows precise communication across languages, scripts, cultures, borders. The ISMN Archive, maintained at the Library of Congress, ensures continuity of public access to information about U.S. music publications.  The use of ISMN in the United States is free. It's easy. It's good for business.

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Using ISMN

What gets ISMN, how to apply it, and examples of usage.

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Publisher Practicalities


U.S. ISMN Agency
Music Division
Library of Congress
Att.: Mr. Benjamin Barba
101 Independence Ave. SE
Washington, DC 20540-4710

Tel: (202) 707-0221
Fax: (202) 707-0621
E-mail: [email protected]