Grouping:
Pentecost (50 days after Pascha)
This hymn of "O heavenly King, the Comforter, the Spirit of Truth . . ." is sung on the Feast of Pentecost at three places: 1) as the 3rd stichera at the Aposticha in Vespers; 2) after "Have mercy upon me" after Psalm 50 in Orthros; and 3) as the Doxastikon (Glory) at the Praises in Orthros. This music is in Western and Byzantine notation. Updated 3/2/2021.