The purpose of this study was to investigate the relationship between seventh, tenth, and twelfth graders' participation in school choir and their perceived levels of self-concept and social support. The problems of the study were to determine (1) if there were significant differences in perceived self-concept and social support levels of choir members and non-music students, and (2) if there were significant changes in self-concept and social support of choir members from grades seven to ten to twelve. A secondary concern was school activity involvement, to guard against attributing significant differences of self-concept and social support to choir participation alone.