The lecture was given on March 3, 1974. The discussion of the Bolognese trumpet works consisted of an exploration of the local agencies that nurtured the compositional activity centered around San Petronio, biographical details of the principal composers, and stylistic and formal analyses of the works that were performed. Selections were performed from the early, middle, and late segments of the period, represented by the composers Maurizio Cazzati, Petronio Franceschini, and Giuseppe Torelli. In addition to the lecture recital three other public recitals were given. Two of these consisted primarily of solo literature for the trumpet, and the third featured chamber music with trumpet. The first solo recital was presented on July 31, 1972, and included works of Tommaso Albinoni, G. Ph. Telemann, Thérèse Brenet, and Wayne Bohrnstedt. The second solo recital, on July 22, 1974, featured French music of this century. Compositions by Ravel, Fauré,Varèse, Henri Tomasi, Pierre-Max Dubois, Benno Ammann, and Théo Charlier were presented. The chamber music recital displayed the trumpet in combination with other solo instruments and voice, together with varied accompaniments. A group of three arias for soprano and trumpet--by Purcell, Handel, and Bach--and a suite of arias for oboe and trumpet by Telemann were …

The lecture recital was given July 22, 1974. A discussion of the tientos of Cabezon, Aguilera de Heredia, Coelho, Correa de Arauxo, and Cabanilles included an analysis of eight specific works, a comparison of styles, and information about performance practices. The eight works were then performed. In addition to the lecture recital three other public recitals were performed, consisting entirely of solo literature for the organ. The first solo recital, on July 2, 1971, included works of Titelouze, deGrigny, Franck, and Alain. The second solo recital, on June 18, 1973, consisted of works by Bach, Klebe, Bruhns, Reger, Heiller, and Liszt. The final solo program, on June 7, 1974, included works by Boyvin, Buxtehude, Mozart, Alain, and Reger. All four programs, recorded on magnetic tape, are filed, along with the written version of the lecture material, in the North Texas State University library.

The evolution of the role of the trombone as a solo instrument in the nineteenth and twentieth centuries can be traced most effectively through four schools of playing, with the music of today's avant-garde being a logical historical culmination of these four schools. It will be demons t rated that the avant-garde's use of the solo trombone has merely continued the evolutionary process started in the early nineteenth century. The contribution of the early nineteenth-century virtuosi was the establishment of the idea that the trombone could compete on its own terms with other instruments as a solo instrument. In addition to expanding the technical capabilities, they also left a basic solo repertoire. With the death of the virtuosi the trombone as a solo instrument went into a decline. For the remainder of the nineteenth century and well into the twentieth century the Paris Conservatoire was influential. Standards of solo performance were brought to new heights by excellent study material and contest solos. The next important step came from the late nineteenth-century American band virtuosi. Their influence helped the public to accept the idea of the trombone as a solo instrument. The American jazz trombonists of the 1930's and 1940's also …

The lecture recital was given April 1, 1974. Eighteenth-century accounts of the voices and performing styles of Francesca Cuzzoni, Faustina Bordoni, and Anna Strada del Pò were related to six opera arias written for them by George Frideric Handel. The arias, accompanied by harpsichord, violin, and violoncello, were performed with added original ornamentation. In addition to the lecture recital two other public recitals and two opera roles were performed. The first solo recital was on February 11, 1972, and included works by Mozart, Fauré, Rimsky-Korsakov, R. Strauss, Walton, Moore, and others. The second solo recital, on October 15, 1973, included works by Porpora, Rameau, Handel, Wolf, Donizetti, Debussy, and Schubert. The role of "Urgele" in the marionette opera Die Fee Urgele by Pleyel was performed in English on October 30 and 31, 1972, with the Collegium Musicum of North Texas State University. The role of "Clorinda" in Rossini's La Cenerentola was performed in English on November 26 and 28, 1972, with the Shreveport Symphony.

The lecture recital was given on August 9, 1974. Chorale partitas by Sweelinck, Scheidt, B051hm, and Walther were performed following a lecture on the chorale partita in the Baroque period. The lecture included a discussion of the instruments that the partitas were written for and the functions for which they were written. The works of Sweelinck and Scheidt and their influence on later composers were discussed. A number of lesser-known composers and their works were mentioned. Also, there was a discussion of works by well-known composers such as Bohm, Pachelbel, Buxtehude, Walther, and Bach. In addition to the lecture recital, three other public recitals were performed, all of which consisted of solo compositions for the organ. The first solo recital, including works of Buxtehude, Bach, Walther, Pepping, ?ranck, Alain, and Durufle, was performed on July 18, 1971. On August 13, 1972 the second solo recital was performed. Compositions by Greene, Stanley, Searle, Willan, Dandrieu, Roger-Ducasse, and Langlais were included in the program. The third solo recital, which included works by Sweelinck, Bach, Guillou, and Reubke, was performed on June 5, 1974. The four programs were recorded on magnetic tape and are filed with the written version of the lecture material …

In this study of vocal chamber duets the various approaches used in duet writing from the late sixteenth century through the nineteenth are examined. Various meanings attributed to the terms "vocal duet" and "chamber duet" are considered, and an appropriate delineation of the genre is determined. The study begins with examination of bicinia, dialogues, and concertato madrigals of the late sixteenth century, three kinds of works related to the continuing lines of interest in duets of later centuries: pedagogical duets, dialogue duets, and duets shaped by general musical trends. After a foundation has been laid in the sixteenth century, examples of duets of various kinds for the next three centuries are considered. It is seen that a discontinuity in the history of the vocal chamber duet occurs during the Classical period. Operatic and chamber duets prior to this time show great similarities in style. Operatic and chamber duets of the nineteenth century show distinct differences in style. At the same time that differences between operatic and chamber duets were increased, the differences between solo and duet chamber works by the same composer were decreased.

The dissertation consists of four recitals: three solo recitals and one lecture recital. The repertoire of all the programs was intended to demonstrate a variety of music written originally for trombone. The lecture recital, "The Trombone in German and Austrian Concerted Church Music of the Baroque Period," was presented on July 3, 1974. The lecture was an attempt to illuminate the position of the trombone, both as an ensemble instrument and as a solo obbligato instrument, in church music of the Baroque period. The program included the performance of two works by Heinrich Schutz for bass voice, four trombones, and continuo; one work by Andreas Hammerschmidt for alto, bass, trombone, and continuo; and one work by Johann Joseph Fux for soprano, trombone, two violins, and continuo. A line of influence was traced from the Venetian composers Giovanni Gabrieli and Claudio Monteverdi, through Schiitz, Hammerschmidt, and Fux, to Mozart.