As a composer of music for worship, Kallman is best known for his liturgical setting “Light of Christ,” commissioned for the Lutheran hymnal With One Voice. His youth choir musical, Jubilee, We Are Set Free, has been widely performed. Kallman’s church choir anthems, hymn settings and other liturgical service music are sung throughout the country. He has composed music for "The Way Home", a retelling of the parable of the prodigal son in a full-length stage play by Herbert Brokering. "Let the Same MInd Be Among You," was a commissioned hymn for the Southwest Minnesota Synod (ELCA) Assembly. His most recent hymn was for Zumbro Lutheran Church in Rochester, Minnesota. Dan directs the adult choir at Bethel Lutheran in Northfield, Minnesota.