A Worship Leader’s Introduction to Voices Together. Join Katie Graber, Ph.D., and Anneli Loepp Thiessen, M.M., to explore how your worship can grow in vitality through understanding the new Voices Together hymnal within the unique culture of your church community. This online AMBS short course from Anabaptist Mennonite Biblical Seminary lasts six weeks. CEUs are available. See ambs.edu/worshipleaders for details.