On Wikipedia https://en.wikipedia.org/wiki/Monteverdi_Choir
Creation 1964
City Cambridge, MA, United States
Country United Kingdom

For over 60 years, the Monteverdi Choir has been recognised as one of the greatest and most influential choirs in the world. Founded in 1964 by Sir John Eliot Gardiner for a performance of the Vespro della Beata Vergine in King's College Chapel, Cambridge, the Choir has become famous for its stylistic conviction and extensive repertoire, encompassing music from the Renaissance period to Classical music of the 20th century. They often appear with the English Baroque Soloists and Orchestre Révolutionnaire et Romantique, also founded by John Eliot Gardiner. wikipedia