David Perkins is the director of the Religion in the Arts and Contemporary Culture program at Vanderbilt University in Nashville, Tenn. He is a guitarist and songwriter who plays for the Nashville chapter of Beer and Hymns. He teaches courses on religion and the arts, including the theology of song.

Geoff Little is the leader of Beer and Hymns in Nashville, Tenn., which meets at the Mercy Lounge, a 500-seat venue.

Jeremy Smith is the senior pastor of First Church, the First United Methodist Church of Seattle. He blogs at Hacking Christianity where he has written about non-traditional worship services and churches, including bar churches and dinner churches.

Matthew Peeples is the lead pastor of The Point Knox, a Lutheran church in Knoxville, Tenn. He also holds a regular worship service in a bar called The Bar Church.

Christopher B. James is an assistant professor of evangelism and missional Christianity at the University of Dubuque Theological Seminary in Dubuque, Iowa. He is author of Church Planting in Post-Christian Soil: Theology and Practice (2017) and is an expert on churches and worship in non-traditional places.