Standard cataloguing formats

Various levels:: Bibliographic
Authorities
Holdings
Classification
MARC 21: Developed 1999 by the Library of Congress
15th Update 2012
Now adopted by numerous national communities
UNIMARC: Developed 198. by IFLA
5th Update published 2005, 6th forthcoming
Developed as exchange format
Now adopted by numerous nations, with local adaptations
Specific fields for music: Coded fields:
   Musical form
   Medium of performance
   Music incipit
   Format of notated music (music presentation)
Application of FRBR (in development)
   Work (uniform title)
   Expression (arrangement, performance, presentation)