This book contains arrangements of the Octoechos, or Eight Sunday Tones according to the Byzantine Ruthenian tradition in four-part harmony. The text and melodic lines (soprano part) are taken The Divine Liturgies of Our Holy Fathers John Chrysostom and Basil the Great, published by the Byzantine Catholic Metropolitan Church of Pittsburgh in 2006. The Troparion, Glory to the Father..., Kontakion, Prokeimenon, Alleluia and Verses for each of the Eight Sunday Tones are included. This work is not an official publication of the Byzantine Catholic Metropolitan Church of Pittsburgh.