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. Published in Venice (with a dedication to Pope Paul V dated 1 September 1610) as ("Mass for the Most Holy Virgin for six voices, and Vespers for several voices with some sacred songs, suitable for chapels and ducal chambers"), it is sometimes called Monteverdi's Vespers of 1610. Monteverdi composed the music while musician and composer for the Gonzagas, the dukes of Mantua. The libretto is compiled from several Latin Biblical and liturgical texts. The thirteen movements include the introductory Deus in adiutorium, five Psalms, four concertato motets and a vocal sonata on the "Sancta Maria" litany, several differently scored stanzas of the hymn "Ave maris stella", and a choice of two Magnificats. A church performance would have included antiphons in Gregorian chant for the specific feast day. The composition demonstrates Monteverdi's ability to assimilate both the new seconda pratica, such as in the emerging opera, and the old style of the prima pratica, building psalms and Magnificat on the traditional plainchant as a cantus firmus. The composition is scored for up to ten vocal parts and instruments including cornettos, violins, viole da braccio, and basso continuo. Monteverdi travelled to Rome to deliver the composition to the Pope in person, and a partbook is held by the Vatican Library. No performance during the composer's lifetime can be positively identified from surviving documents, though parts of the work might have been performed at the ducal chapels in Mantua and at San Marco in Venice, where the composer became director of music in 1613. The work received renewed attention from musicologists and performers in the 20th century. They have discussed whether it is a planned composition in a modern sense or a collection of music suitable for Vespers, and have debated the role of the added movements, instrumentation, keys and other issues of historically informed performance. The first recording of excerpts from the Vespers was released in 1953; many recordings that followed presented all the music printed in 1610. In some recordings and performances, antiphons for a given occasion of the church year are added to create a liturgical