This piece is part of OCP's Trinitas editions, geared for intermediate to advanced ensembles. Foster takes text for the Matin Responsory from the First Responsory of Advent Sunday Office of Matins, and for the Vesper Responsory, from the Vigil of the Nativity Office of Lauds. A good sense of ensemble intonation is necessary for this piece. Soprano parts are true Soprano I and Soprano II vocal ranges. The melody of this piece migrates from section to section through the piece.
Vocal lines are very easy.
Performance notes provide options for how to perform this piece. Vocal parts are straightforward and lie in a comfortable range. There is some divisi in both men's and women's parts, yet it is not insurmountable at all. This Christmas carol, set for SATB, has easy and accessible vocal lines. The tessitura is in a comfortable range.