Based on theories that low self-esteem is related to criminal activity (Oser, 2006) and high self-esteem derives from competence and worthiness (Harter, 1985; Mruk, 2006), this study measured changes in community singers' attitudes toward prisoners and documented changes in prisoner singers' perceptions of their social competence. Participants included 22 prisoners and 22 community members over a 12-week choral program in a medium-security Midwest state prison. Community members completed an Attitudes Toward Prisoners Scale (ATPS) before meeting the prisoners and after the group's concert. All answered open-ended questions summarizing the choir experience. Results indicated a significant difference (p less than 0.01) between pre- and post-measurements on the community singers' ATPS. Two categories emerged from the open-ended answers: relationships with others and self-gratification. Five subcategories under relationships with others emerged from prisoner singers' data: feeling respected, getting along with others, making friends, connecting to something outside prison, and improving family relationships. (Contains 1 table.)