LIST OF WORKS.
Of all the great composers, Mozart was one of the most prolific. The chronological thematic catalogue of his works, by Kochel, published at Leipzig in 1862, contains 626 numbers, varying in length from short pieces of only a few bars to operas, the manuscripts of which fill hundreds of pages. Even a clearer idea of the enormous quantity of music written by Mozart in his short life of thirty-six years will be gained when it is said that the complete collection of his works, published by Breitkopf and Hartel, of Leipzig, fills nearly 13,000 folio pages. The following list, compiled from Kochel's catalogue, will show not only the extent, but the variety of the ground covered by the composer. A few of the works mentioned by Kochel have been lost, and are therefore not included in Breitkopf's edition.
1. VOCAL MUSIC.
1. Nineteen Masses, and the Requiem. Of the Masses three are incomplete, and the genuineness of one is doubtful.
2. Four Litanies and three Vespers.
3. Forty short pieces of sacred music (offertories, motetts, etc.).
4. Two oratorios (La Betulia Liberata and Davide Penitente) and four cantatas.
5. Twenty-three operas and other dramatic works. This list includes the incidental music to the play König Thamos, and the two unfinished operas, L'Oca del Cairo and Lo Sposo Deluso.
6. Sixty-six concert arias, trios, etc., with orchestral accompaniment. Many of these were written by Mozart for his personal friends; others were intended to be introduced, according to the custom of the time, into operas by other composers.
7. Forty songs, with accompaniment for the piano.
8. Twenty-two canons for voices without accompaniment. Of these one is for two voices, eight are for three, ten for four, two for six, and one for three four-part choirs.
2. INSTRUMENTAL MUSIC.
9. Forty-nine symphonies for orchestra.
10. Thirty-three serenades and divertimenti for various combinations of instruments.
11. Twenty-seven miscellaneous instrumental works of various kinds—symphony movements, minuets, marches, etc.
12. Thirty-nine collections of dances, containing 194 separate numbers.
13. Six concertos for violin, one for two violins, and one for violin and viola; also four single movements for a solo violin with orchestra.
14. Twelve concertos, or single movements, for various wind instruments with orchestra.
15. Nine string quintetts, of which one is with horn and another with clarinet.
16. Twenty-seven quartetts for strings, two for strings with flute, and one for strings with oboe.
17. One trio and three duets for strings.
18. Twenty-seven pianoforte concertos, including one for two and another for three pianos; also two rondos for piano and orchestra.
19. A quintett for piano and wind instruments; two quartetts and seven trios for piano and strings, and one trio for piano, clarinet, and viola.
20. Forty-three sonatas, and two sets of variations for piano and violin.
21. A fugue and a sonata for two pianos; five sonatas and a set of variations for piano duet.
22. Seventeen sonatas for piano solo.
23. Four fantasias, fifteen sets of variations, and twenty various pieces for piano solo.
24. Seventeen sonatas for organ, with other instruments, written for Salzburg.
In addition to the above works, Kochel's catalogue gives a list of ninety-eight works which Mozart began, but, for some unknown reason, never completed.