The specific problems investigated involved identifying and describing the characteristics of fundamental frequency, overall intensity, and spectral content in unaccompanied and ensemble performance settings. Additionally, comparisons and descriptions of the relationships among these acoustical parameters were made. Fifteen trombonists were used as research subjects. Each subject recorded a selected musical excerpt in the following performance modes: high register unaccompanied, harmonic, and unison ensemble; and low register unaccompanied and unison ensemble. Tape recordings of these subjects were used in conjunction with certain electronic apparatus to obtain data on frequency, intensity, and spectral content. Based on these data, descriptions of these acoustical parameters and comparisons of unaccompanied and ensemble performance settings were made.

This study investigated the relationship between selected measures of self concept as perceived by a group of choral conductors, their eye dependency on score, and the measures of expressive voice. The problems were (1) to determine the degree of perceived self concept of a selected group of choral music teachers through measures of (a) total self, (b) physical self, (c) moral-ethical self, (d) personal self, (e) family self, and (f) social self? (2) to assess eye dependency on score of the same teachers; (3) to assess the aspect of expressive voice through measures of (a) pitch levels of modulation, (b) speech flow, and (c) voice energy level; and (4) to examine the relationship between the measures of self concept, eye dependency on score and expressive voice.