Laetatus Sum. Par VIVALDI ANTONIO. The 121st Psalm of the Vulgata forms part of the Roman Catholic liturgy for Vespers on the feast da of a virgin (namely, the Virgin Mary). Vivaldi's setting, given its first edition, is one of his simplest psalm statements that have come down to us. / Date parution : 1984-08-01/ Répertoire / Choeur SATB, Violon, Alto et Basse Continue