THE ORGAN MUSIC OF HAYDN AND MOZART

The quantity of works written for the organ by Franz Joseph Haydn (1732-1809) and Wolfgang Amadeus Mozart (1756-1791) is quite small when compared to their total compositional output. This study contains brief descriptions of the three known flute clocks of Haydn, as well as an analysis of specific characteristics of the entire collection of thirty-two flute clock works.;In general, throughout Haydn's sacred works, the organ functions as part of a continuo. Only a few examples of a significant organ obbligato survive. These include just two masses, Missa brevis Sancti Johannis de Deo (Kleine Orgelmesse) and Missa Solemnis in Honorem Beatissimae Virginis Mariae (Grosse Orgelmesse), as well as a Salve Regina in G Minor. Likewise, in the sacred works of Mozart, the organ functions largely as a part of the continuo ensemble with the exception of a prominent organ obbligato in the Benedictus of his Missa brevis in C Major, K. 259.;The seventeen Epistle Sonatas of Mozart, written for organ and small ensemble, were specifically composed for the cathedral in Salzburg, and functioned as interlude music between the Epistle and Gospel of the mass. An analysis of specific characteristics of the entire group is included in the study.;The mechanical clockwork compositions of Mozart represent the most significant contribution to organ literature in the late eighteenth century. The concluding chapter contains a brief discussion of early transcriptions of the three works, Adagio, Allegro (und Adagio) K. 594; Fantasie, K. 608; and Andante, K. 616, and a description of the clocks which contained them, followed by a detailed analysis of each work.;The exact number of organ concertos written by Haydn continues to be quite controversial among musicologists. Various viewpoints are presented and a detailed analysis of the Concerto in C Major, Hoboken XVIII:1 follows. Three other C-major concertos, Hoboken XVIII:8, XVIII:5, and XVIII:10, are also discussed.