List of compositions by Ferruccio Busoni
This article presents a complete catalog of original compositions by Ferruccio Busoni, including a large number of early works, most of which remain unpublished. The earliest preserved pieces were written when he was barely seven years old. Over 200 of the total of 303 original compositions were produced before the age of twenty. For a more selective list of recorded works, see Ferruccio Busoni discography. Busoni also produced a number of cadenzas, transcriptions, and editions. For a complete list see "List of adaptations by Ferruccio Busoni". Introductory notes. Opus numbers. Busoni's opus numbers  are confusing. Initially he numbered each work as he wrote it. Upon reaching Op. 40 he began assigning opus numbers of unpublished youthful works to new compositions. Later he started again from Op. 30, adding an "a" to Op. 30 to 36. From Op. 41 the numbering is fairly regular although it bears little relationship to the actual date of composition, and many compositions were published without opus number. Among unpublished compositions, some have two opus numbers. Because of their confusing nature Roberge recommended against using them and eliminated them from his List of Works. However, since opus numbers are  written on manuscripts, included on published scores, used for identification of compositions by many recordings, and included in the standard reference works by Dent (1933), Kindermann (1980), Beaumont (1985), and Sitsky (2008), they are given here as an aid in identification. The user should be aware, however, that a particular opus number may refer to more than one item and says very little about the date of composition or publication. Catalog numbers. The letters BV (Busoni-Verzeichnis [Busoni Catalog]) followed by a number are used for identification of Busoni's original compositions. The BV numbers are based on the first  comprehensive catalog of Busoni's unpublished as well as published works prepared by Jürgen Kindermann. The letters KiV are also sometimes used, as well as the abbreviations Kind- and K. Although Kindermann himself did not specify any letters to be used for referring to his catalog, he has agreed to the use of the abbreviation BV. The catalog is not strictly chronological, since it frequently incorporates published works by the date of publication rather than the date of composition. When the catalog number is preceded by the letters BV B, for example, "Ten Chorale Preludes by Bach", BV B 27 , it refers to a cadenza, transcription, or adaptation (see List of adaptations by Ferruccio Busoni). Catalog of original compositions. BV catalog numbers are from Roberge. Titles and opus numbers are listed as in Beaumont, except as noted. Titles are in the original language, except for instrumentation and generic terms, such as "string quartet." For example, Beaumont partially translates "Berceuse pour le piano," to "Berceuse, for piano." Additional title information provided by Roberge, for example, a key signature not found in the original title, is sometimes added in parentheses. For works with text, the first line is typically given, followed by  the name of the poet in parentheses. Translations, when provided, are in brackets. Dates of composition and durations are from Beaumont, unless otherwise indicated. Dedications are from Roberge. Busoni Archive: Most of Busoni's unpublished early manuscripts, as well as those of later works, have been preserved in the "Busoni-Nachlaß" [Busoni-Archive]. The collection consists of 366 cataloged items, many of which were lost during the Second World War, and after the war were divided between Stiftung Preußischer Kulturbesitz, Musikabteilung, in West Berlin and the Deutsche Staatsbibliothek, Musikabteilung, in East Berlin. Kindermann lists the locations and manuscript numbers of  each work, for those manuscripts which were available until the year he published his catalog (1980). Some of the lost items reappeared later; most are now at the Jagiellonian University in Cracow. After the fall of the Berlin wall, the two libraries were reunited as the Staatsbibliothek zu Berlin. Sitsky (pp. 363–383) has an appendix listing manuscripts (with numbers, locations, titles and/or a short description), including those lost, which may yet reappear, as well as those not part of the Busoni-Archive, which are either not numbered or are numbered with a different system. The Busoni-Archive manuscript numbers provided  by Sitsky are prefixed with the letters "SB", a procedure which has been adopted here as well. Abbreviations: acc., according to; arr., arrangement; SB, Staatsbibliothek zu Berlin; B&H, Breitkopf & Härtel, Leipzig (unless otherwise indicated); cat., catalog; ded., dedicated to; dur., duration; frag, fragment; fp, first performance; (score), link to score at the International Music Score Library Project; instr., instrumentation; MS, manuscript; pub., published; rev., revised; unpub., unpublished. This section lists additional original works not assigned numbers in the Kindermann catalog. They are listed in the order given in Roberge (pp. 45–46) with one additional item (no. 9). Catalog details. ^  BV 42: String quartet no. 2 (in F minor) ^ BV 45: Il Dolore: Romanza senza parole [Sorrow: Romance without words] (in A minor), for piano ^ BV 48: Gavottina (in F major) Op. 3 no. 3, for piano ^ BV 51 Ouverture (in E major), for (large) orchestra (unfinished) ^ BV 57: Sonata (No. 4 in F minor)? (unfinished) ^ BV 58: Sonata No. 1 in C major Op. 7, for piano ^ BV 61: Sonata No. 2 in D major Op. 8, for piano ^ BV 62: Scherzo (in F-sharp minor), for piano ^ BV 64: Preludio  (in E minor), for piano ^ BV 65: Sonata No. 3 in E major Op. 9, for piano (unfinished) ^ BV 67: "Ave Maria," (Antiphon) Op. 1, for voice and piano ^ BV 71: Cinq Pièces [Five Pieces] Op. 3, for piano ^ BV 72: Andante con moto (in E minor) Op. 10, for clarinet and piano ^ BV 203: Six études Op. 16, for piano BV 204: Sonate f-moll Op. 20 für Klavier [Sonata in F minor, Op. 20, for piano] BV 241:  Stücke [Pieces] Op. 33b, for piano ^ BV 274: Sonatina in diem nativitatis Christi  MCMXVII für Klavier zu zwei Händen