The Divine Office, Holy Communion, and other Liturgies set to Plainchant in modern English, written for all who love the worship of our Holy Lord and who desire to sing the ancient liturgies and psalter in the Plainchant settings. The major liturgy sources include various editions of American and British Anglican books of common prayer. Chant sources include the Liber usual is, Winfred Douglas's Psalter and Canticle collections, and the chant transcriptions of noted musicologist, Hendrik Van der Werf.