Hans Moldenhauer has established the definitive listing of Webern’s works. Moldenhauer organizes the works in five categories: Published Works with Opus Numbers, Published Works without Opus Numbers, Other Works and Projects, Arrangements, and Writings. Each work also has a chronological number assigned to it. Moldenhauer includes dedication information, performance medium, text source (where applicable), place and date of composition, publisher and date of publication, and the place and date of the first performance.