Question: During which service is the canticle upon which Bach's cantata Meine Seel erhebt den Herren, BWV 10 is based traditionally included in the Eastern Orthodox church?
Sentence (from "Meine Seel erhebt den Herren, BWV 10"): Taken from Martin Luther's German translation of the Magnificat canticle ("Meine Seele erhebt den Herren"), the title translates as "My soul magnifies the Lord".
Relevant evidence: Yes