The opera, The Pilgrim's Progress, was written by Ralph Vaughan Williams in 1949. "The Seven Songs" are analyzed for performance, examining the elements of music and text of the songs, including melody, harmony, form, vocal line and accompaniment, with the intent of forming conclusions in regard to their usefulness as singular selections, or as a group, for performance.

The subject of the present study, Florence, Biblioteca del Conservatorio di Musica Luigi Cherubini, MS Basevi 2439, abbreviated Florence 2439,1 contains secular and sacred vocal music of the late fifteenth and early sixteenth centuries, with texts in French, Dutch, Italian, and Latin.

"Music for Orchestra and Electronic Tape" is an attempt to combine the instruments of the symphony orchestra with electronic sounds which were pre-recorded on tape. The composition is divided into three sections, comprising a large ABA' form with an introduction and a coda. An electronic event occurs between each section.

Oscillation for Prepared Electronic Tape and Symphony Orchestra is a multi-sectional one-movement composition with an aleatory section that has been partially serialized. The piece begins with a five-tone motif on tape which is developed by the orchestra as an introduction to Section I. The principal theme is developed by the strings and brought it to a climax. This climax is immediately interpolated by the five-tone motif slightly altered. At this point the thematic material is mutated and the orchestra goes through a harmonic texture change. The quartal harmonic treatment develops a cluster of tones that resolve into other clusters and the process is repeated to the accelerando of Section II.

This quartet shows the composer's development from a highly chromatic, freely melodic, un-serialized style in movement I, through a still free, but disjunct, somewhat more ordered style in movement II, to a style in movement III which makes much use of serial techniques. This last usage, however, no longer employs the twelve-tone method in a stiff and fettered manner.

This symphony was composed for the purpose of communicating with a contemporary audience and not to please some unknown colleague or future generation. Therefore, experimentation with novel media or systems was rejected in favor of a more conventional approach.