MILWAUKEE — “And we, though many, throughout the earth, we are one body in this one Lord,” goes the popular hymn, One Bread, One Body. It is that line which reflects and helps the Catholic community understand the diversity of cultures within its church. “We have a choice to embrace this growing cultural diversity or resist,” said Sacred Heart Sr. Mary E. McGann at a workshop for musicians at the National Pastoral Musicians Conference in Milwaukee. Sr. McGann is associate professor of liturgy and music at the Franciscan School of Theology and the Graduate Theological Union in Berkeley, Calif. “God...