This study makes available in English translations the three most important theoretical writings of the Austrian composer Josef Matthias Hauer (1883—1959), whose experiments with atonal and dodecaphonic music are discussed in the treatises. The treatises are Vom Wesen des Musikalischen: Grundlagen der Zwolftonmusik, Vom Melos zur Pauke: eine Einfuhrung in die Zw51ftonmusik, and Zwftlftontechnik: die Lehre von den Tropen. In addition to the translations and commentary the dissertation includes a sketch of Hauer's career and an examination of his claim that he—not Arnold Schoenberg—was the inventor of the dodecaphonic school of composition.

Busoni's contribution to the art of the piano transcription is formidable. His chorale prelude transcriptions make him responsible for giving over to the piano repertoire a small portion of sacred literature. His special admiration of J. S. Bach, evidenced throughout his life, make Busoni's transcriptional practices all the more significant. Bach himself was a prolific transcriber of his own works and the works of others. This paper presents a brief history of keyboard transcriptional practices, emphasizing Busoni's methods by comparing the original works for organ with the transcriptions for piano. Four chorale preludes form the basis for this study: Ich ruf' zu dir, Herr Jesu Christ (BWV 639), Komm, Gott, Schopfer, Heiliger Geist (BWV 667), Nun komm' der Heiden Heiland (BWV 659), and In dir ist Freude (BWV 615).

The lecture recital was given on June 16, 1980. The Ralph Vaughan Williams Concerto for Bass Tuba and the Paul Hindemith Sonate for Tuba and Piano were performed following a lecture on the historical evolution of the tuba in Europe. The lecture included a history of the predecessors of the tuba and their influence on the development of tuba playing traditions. Tuba performance practices in Europe developed around two playing traditions, one in France and England, and a second in Germany. The ophicleide enjoyed tremendous popularity in France and England during the early nineteenth century. Because this instrument was a major competitor of the tuba in these countries, the tuba was viewed as an ophicleide replacement. Tubists in Europe and England had to develop facility and sound quality equivalent to that of the older instrument. In Germany the tuba's main competitor was the Russian bassoon, a form of upright serpent. At this same time the serpent and its related forms were in decline. This lack of popularity with the older instruments provided an opportunity for the quick adoption of the tuba in Germany.

The lecture was given on April 21, 1980. The problem with which this investigation is concerned is that of gathering information on the composer Johann Hummel, the performer Anton Weidinger, the keyed trumpet, for which the concerto was written, the concerto itself, and its ornaments, and in determining the correct performance practices of the ornaments. Sources written in the middle to late eighteenth century and from the first third of the nineteenth century gave valuable insight into the facts and attitudes concerning the composer, the performer, the instrument, and the concerto in question. Other information came from present day authorities writing in texts, periodicals, and reference works.