
O Victorious Leader, Tone 8 (melismatic)
Bulgarian Byzantine Chant
Traditions of Byzantine Singing: Serbian, Bulgarian, Greek
Choir of Priests of Sophia

O Victorious Leader
Serbian Chant
Traditions of Byzantine Singing: Serbian, Bulgarian, Greek
Brotherhood Choir of Holy Archangels Michael and Gabriel Monastery

O Thy divine and beloved..
Byzantine Chant
Choir of the Brethren of the Monastery of Vatopedi on Mt. Athos

O Lord, Save Thy People
Byzantine Chant
Supplication Canon (Paraklesis) to Panaghia Paramythia
Choir of the Brethren of the Monastery of Vatopedi on Mt. Athos

O Lord, Our God (Prayer of St. Makarius)
Valery Sariyev
Kastalsky (1856-1926): Liturgy of St. John Chrysostom and Chants of the Russian Orthodox Church
The Bolshoi Theatre Children's Choir

O Lord of Hosts, Tone 8
Bulgarian Byzantine Chant
Traditions of Byzantine Singing: Serbian, Bulgarian, Greek
Choir of Priests of Sophia

O Give Thanks to the Lord (Athonite), Tones 1, 7, and 8
Byzantine Chant
Traditions of Byzantine Singing: Serbian, Bulgarian, Greek
Monastery Annunciation of Mother of God Women's Choir

Now the Powers of Heaven
Kyr Stephan of Serbia
Traditions of Byzantine Singing: Serbian, Bulgarian, Greek
Dragoslav Pavle Aksentyevich