It is also known as Sidra' d'neshmatha, " Book of Souls," and besides hymns and doctrinal discourses contains prayers to be offered by the priests at sacrifice and at meals, as well as other liturgical matter.
The Udgatri's duties being mainly confined to the chanting of hymns made up of detached groups of verses of the Rigveda, as collected in the Samaveda-samhita, the more important Brahmanas of this sacerdotal class deal chiefly with the various modes of chanting, and the modifications which the verses have to undergo in their musical setting.
To this day hymns are unwittingly sung to Bacchus in the dales and glens of Kafiristan.
But if the hymns in the two introductory chapters owe even their Greek form in any measure to him, he was a poet of no mean order.
18 Paul contrasts the being filled with the Spirit with the foolishness of intoxication with wine, and remarks that those filled with the Spirit speak to themselves in psalms and hymns and spiritual songs and give thanks always for all things.