Melanie C. Ross is an associate professor of liturgical studies at Yale Divinity School and Yale Institute of Sacred Music, New Haven, Connecticut. Her research examines ecumenical liturgical theology, North American evangelicalism, and the worship of contemporary congregations, which resulted in the publication of Evangelical versus Liturgical? Defying a Dichotomy (Eerdmans, 2014) and Evangelical Worship: An American Mosaic (Oxford University Press, 2021). She is the editor of On Earth as in Heaven? Liturgy, Materiality, and Economics (Liturgical Press, 2025).

Karen B. Westerfield Tucker is professor of worship at Boston University School of Theology, Boston, Massachusetts. A former editor-in-chief of Studia Liturgica (2005-2013), she is the 2023 recipient of the Berakah Award from the North American Academy of Liturgy. She coedited (with Geoffrey Wainwright) The Oxford History of Christian Worship (Oxford University Press, 2006), authored American Methodist Worship (Oxford University Press, 2001), and has published numerous essays in the areas of Methodist/Wesleyan liturgical history and theology, hymnology, and ecumenism.