The present study was designed for the purpose of comparing the effectiveness of two methods of orchestral programming, demonstration and non-demonstration, upon (1) the musical perception of the members of a student body audience, and (2) the attitudes of the members of a student body toward orchestra as a school subject. This comparison of demonstration and non-demonstration programming involved the question concerning the effectiveness of instructive listening as compared with free listening in the development of musical perception and attitudes. The problem of the present study is presented in the following major areas: (1) musical perception, end (2) attitudes.