There’s so much more to Vivaldi than The Four Seasons and, here, in the company of the award-winning contralto Delphine Galou and her husband, Ottavio Dantone, a light is shone on his sacred music. With her rich, flexible and wonderfully expressive voice, Galou is a glorious companion for this short journey that reveals Vivaldi’s genius in the vocal arena. She is gifted at finding the still core of a piece like “O clemens, o pia” from the Salve Regina, making time stand still, while in a number like the duet “Hymnus Deus tuorum militum” (with Alessandro Giangrande) the music dances and sparkles.