Vespro della Beata Vergine
Vespro della Beata Vergine (Vespers for the Blessed Virgin), SV 206, is a musical setting by Claudio Monteverdi of the evening vespers on Marian feasts, scored for soloists, choirs, and orchestra. It is an ambitious work in scope and in its variety of style and scoring, and has a duration of around 90 minutes.
Source: Wikipedia — Vespro della Beata Vergine (CC BY-SA 4.0)