WoO (abbreviation from German 'Werke ohne Opuszahl', in English 'Works without opus number') is a catalogue prepared in 1955 by Harry Halm and Georg Kinsky, listing all of the compositions of Ludwig van Beethoven that were not originally published with an opus number, or survived only as fragments. See: List of compositions by Ludwig van Beethoven. The abbreviation is also used sometime to refer to works without opus by other composers.
Author:
Also known as:
- Kinsky-Halm catalog,
- Beethoven's Works: thematic and bibliographic catalogue of all his completed compositions by Georg Kinsky, completed and edited after the author's death by Hans Helm,
- WoO
