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Gloria tibi Trinitas, una Deitas, et ante omnia saecula, et nunc et in perpetuum.
Glory to you, O Trinity, one Godhead, before all ages, now and forever.
"Glory to You."
Gloria tibi (one person); Gloria vobis (more than one person).
Bach
A choral piece is called a choral work or choral composition. It is written to be performed by a choir or group of singers.