The purpose of this study is to provide a guide for the instruction of a trumpet mariachi performance ensemble in a music curriculum. The fulfillment of this purpose is dependent upon the data supplied in answer to the sub problems: (1) What socio-cultural information provides authentic trumpet mariachi music; (2) What trumpet mariachi literature illustrates the repertoire and style; (3) What instructional source materials may be developed such that Mexican American and non-Mexican American instructors build a competency in repertoire and style; (4) How could this guide be evaluated in its functional design for a music curriculum? The data collected for use in this study has been presented in three major categories: (1) the history and milieu in which the trumpet, mariachi crystalized; (2) the repertoire--its history and function in Mexican society and the transcriptions of types demonstrating the musical structure; and (3) the technical information relative to the instruction of the particular mariachi instruments. An evaluative instrument has been supplied in an attempt to establish the validity of the information and examples provided in this practicum. The validity of the research seems to rest on its authenticity and its serviceability. The findings of this study are stated as assertions …

The purpose of the study was to develop and evaluate a series of video-tape lessons to supplement the traditional lecture-discussion method of teaching a college course in advanced music theory. The specific problems investigated were: 1) to evaluate the effect of video-tape material on achievement in an advanced music theory course. 2) To assess the effect of the video-tape materials on the achievement in harmony, keyboard, sight singing, and ear training for students who had differential learning ability levels. 3) To assess the attitudes toward music theory and the use of the supplemental lessons. 4) To assess attitudes toward music theory and the use of the supplemental lessons and achievement for all students involved in the study. Analysis of co-variance, simple analysis of variance, t tests, and Pearson correlations produced statistical results that led to the following conclusions: 1) Students who used the video-tape supplemental lessons did not score higher on achievement tests in harmony, keyboard, sight singing, and ear training than the students who did not use those lessons. 2) Students who used the video-tape lessons had greater variance among the ability levels on the achievement tests; and for those using the lessons, students in the low beginning-ability level …