Comparing the effects of interactive audio in computer-based instruction (CBI) versus noninteractive audio in CBI on the skills and attitudes of music students in identifying harmonic voicing was divided into two subproblems for this study. The first was to compare students' skill in identifying harmonic voicing using interactive versus noninteractive audio. The second was to compare music students' attitudes toward CBI using interactive versus noninteractive audio. A two-group pretest-posttest experiment was conducted in which 46 participants volunteered to work with a computer program developed for this study. The experimental group used interactive audio and the control group used noninteractive audio. Both groups completed an attitude measure. The test scores showed acceptable to high reliability. Analysis of the data reveal that the experimental group showed greater skill development than the control group in identifying harmonic voicing. Analysis of the attitude measure reveals no difference between the groups. Four tables and four figures illustrate the study. An appendix describes the program and introduces some music terminology. (Contains 36 references.) (SLD)