Two services in which choral music is emphasized are the Ash Wednesday service, traditionally held in Rothko Chapel, and Tenebrae, a Good Friday service. The hymnal used in Covenant's worship is the 1990 Presbyterian Hymnal. Hymns play an important role in worship and are chosen to enhance the lesson of the day. The congregation learns new hymns readily. Instrumental music, including Prelude and Postlude, is considered to be a part of the worship service.
Worshippers remain in the service until after the postlude is finished.