Nigel Fowler Sutton, who maintains this beautiful YouTube channel with numerous videos of historic photo montages of pre-revolutionary Imperial Russia as well as Russian Orthodox liturgical music, posted this magnificent arrangement of the Magnificat, sung during Orthodox Matins/Orthros services.
Величит душа моя Господа
Хор Соловецкого монастыря
My Soul doth magnify the Lord
Sung here by The Choir of the Solovetsky Monastery
Church of the Intercession at Fili (Branch Museum Andrei Rublev)