This composition investigates the musical interpretation of a macaronic text depicting the angelic song of the Nativity. Libby Larsen, a prominent American composer, utilizes her expertise in choral arrangement to create a serene setting for SATB voices. The work draws upon the lyrical structure of M. K. Dean to provide a contemporary musical framework for traditional Christmas themes. By focusing on unaccompanied vocal performance, the piece emphasizes the harmonic interplay between vocal parts to evoke a specific liturgical atmosphere.

Choral directors and music educators frequently utilize this piece for its accessible yet evocative harmonic structure. Experts highlight the work as a standard selection for holiday repertoire due to its effective use of vocal layering.