Web NDL Authorities is a service by the National Diet Library (NDL), Japan, to access authority data created and maintained by the NDL. Name headings or Subject headings are assigned to the bibliographic data to distinguish different people with the same name or to identify people who use pseudonyms, nonstandard spellings, transliterated names, or other variants. To control these headings, authority data is organized to indicate alternative headings, synonyms, and the basis of choice for the headings.

Music Vocabulary


"A vocabulary, or music ontology, to describe classical music and performances. Classes (categories) for musical works, events, instruments and performers, as well as related properties are defined. Make sure to distinguish musical works (e.g. Opera) from performance events (Opera_Event), or works (String_Quartette) from performer (StringQuartetEnsemble in this vocab), whose natural language terms are used interchangeblly.