This journal is devoted to the needs and interests of the school and college music teachers of Missouri and the United States. Articles in Volume 4, Number 1 are: "Index of Articles in the 'Colorado Journal of Research in Music Education,' 1964-1973" (S. Deich); "Index of Articles in the 'Missouri Journal of Research in Music Education,' 1962-1976" (S. Deich); "Index of Articles in the 'Contributions to Music Education,' Ohio Music Education Association, 1972-1976" (S. Deich); "Index of Articles in the 'Bulletin of Research in Music Education,' Pennsylvania Music Educators Association, 1970-1976" (S. Deich); and "Selected Abstracts in Music Education" (n=9). Articles in Volume 4, Number 2 are: "A Curriculum for Teaching Musicianship to Secondary School Students: Composing, Listening, Analyzing and Performing" (L. B. Hilton); "Retention of Songs, Stories, and Poems by Retarded Children" (W. Lathom); "The Relationships of Selected Academic, Musical, and Background Factors to Grades Obtained in Undergraduate Music Theory and Ear Training Courses" (S. J. Emig); "American Tune Book Compilations Using Shaped-Note Systems, 1801-1860, A Forerunner of American Music Education" (D. L. Oakley); and "Selected Abstracts in Music Education" (n=11). Articles in Volume 4, Number 3 are: "Music as Reinforcement in Increasing Spontaneous Speech among Autistic Children" (D. Watson); "A Study of Several Methods of Handling the Boy's Changing Voice" (F. R. Willman); "The Effect of Training in Interaction Analysis on the Verbal Teaching Behaviors and Attitudes of School Instrumental Music Education Students Studying Conducting" (C. E. Hicks); "The Child-Centered vs. The Adult-Centered Rationale: A Dualistic Approach to the Use of Philosophy in Curriculum Development with Special Application to Music Education" (R. Boyer); and "Selected Abstracts in Music Education" (n=12). Articles in Volume 4, Number 4 are: "A Philosophy for Group Piano Instruction Based upon Learning Theory and Group Interaction Theory" (D. Montano); "The Development of American Public School Elementary String Classes and Orchestras to 1950" (J. E. Hoisington); "The Role of Ethnomusicology in Music Education" (L. B. Hilton); and "Selected Abstracts in Music Education" (n=9). Articles in Volume 4, Number 5 are: "A Survey of the Evolution and Development of the Horn Style" (E. J. Bostley); "The Effect of Approval, Disapproval, and Teacher Error on Classroom Attentiveness: High School Band versus High School Chorus" (D. E. Moyer); "A Comparison of Frequency Discernment Abilities" (O. G. Parker); "Editorial Perspectives in Sunday School Hymnals Published between 1859 and 1898 which Reflect Educational Philosophy and Practice" (M. Voogt); "A Position Paper--Toward Knowing and Liking Musical Styles: The Heuristic Method" (P. K. Shehan); and "Selected Abstracts in Music Education" (n=8). (BT)