Music Catalogue Numbers and Systems
To manage inconsistent opus-number usages — especially by composers of the Baroque (1600–1750) and of the Classical (1720—1830) music eras —musicologists developed comprehensive and unambiguous catalogue number-systems for the works of composers such as:
Johann Sebastian Bach — catalogued with a BWV-number; a Bach-Werke-Verzeichnis number assigned by Wolfgang Schmieder; however, older sources occasionally use S-numbers.
Dietrich Buxtehude — catalogued with a BuxWV-number, a Buxtehude-Werke-Verzeichnis work number.
Frédéric Chopin — three catalogue systems have been applied: (i) B-numbers, by Maurice J.E. Brown; (ii) KK-numbers, by Krystyna Kobylańska; and (iii) work-letters (A, C, D, E, P and S), by Józef Michał Chomiński. Generally, these alternative music-catalogue systems identified compositions that the composer had not numbered.
Claude Debussy — identified with an L-number, per François Lesure's comprehensive catalogue.
Antonín Dvořák — identified with a B-number, per Jarmil Burghauser's comprehensive catalogue; which resolved the problems of different and duplicate opus-numbers assigned by the publishers of Dvořák's music.
Joseph Haydn — identified with a Hob.-number, per the 1957 catalogue byAnthony van Hoboken. Although he assigned Hoboken-numbers to the string quartets, those compositions usually are known by opus numbers.
Franz Liszt — identified with an S-number, per the catalogue The Music of Liszt (1960), by Humphrey Searle.
Wolfgang Amadeus Mozart — identified either with a K-number or with a KV-number (Köchel-Verzeichnis nummer), per the catalogue system of Ludwig Ritter von Köchel.
Domenico Scarlatti — identified with three catalogue systems; (i) L-numbers, per the 1906 catalogue by Alessandro Longo; (ii) K-numbers and Kk-numbers, per the 1953 catalogue by Ralph Kirkpatrick; and (iii) P-numbers, per the 1967 catalogue by Giorgio Pestelli.
Franz Schubert — identified with a D-number, per the catalogue of Otto Erich Deutsch.
Maurice Ravel — identified with an M-number, per the 1986 catologue by Marcel Marnat
( Source : Wikipedia )















