Book of Needs of the Holy Orthodox Church

by Russkaia pravoslavnaia tserkov

Theotokion. A verse addressed to the God-bearing Virgin.

Tone. The ecclesiastical tones are eight in number, and are based upon the ancient classical modes, namely, the Dorian, Phrygian, Lydian, and Ionian for tones i to iv, and the minors of these for tones v to viii. The Slavonic, Greek, and Gregorian tones correspond thus,

Slavonic.	Greek.	Gregorian.
I.	I.	I.
II.	II.	III.
III.	III.	V.
IV.	IV.	VII.
V.	I minor.	II.
VI.	II minor.	IV.
VII.	Grave.	VI.
VIII.	IV minor.	VIII.

Trisagion. The thrice-holy hymn, the words of which are as follow,

Holy God, holy mighty one, holy immortal one, have mercy upon us, sung three times.

When sung in a more solemn manner at the Liturgy and other offices before the reading of the epistle and gospel the mode is thus,

Holy God, holy mighty one, holy immortal one, have mercy upon us. Three times.

Glory to the Father, and to the Son, and to the Holy Ghost, both now and ever, and to ages of ages. Amen.

Holy immortal one, have mercy upon us.

(Dynamis.)