Father Andrei Papkov's unique textbook is the only book addressing the liturgical performance practices of religious singing in the Russian Orthodox Church. The topics it covers include various aspects of choral work in this tradition, including but not limited to the choice of repertoire, the eight-tone system, Kievan square notation, rehearsal techniques, vocal pedagogy, and the element of time within Orthodox church services. This definitive textbook will be of interest to anyone working, worshipping, or interested in the rich musical tradition of Orthodox Christianity.