|Motet by W. A. Mozart|
The composer in the 1770s
|Performed||17 January 1773|
This religious solo motet was composed at the time Mozart was staying in Milan during the production of his opera Lucio Silla which was being performed in the Teatro Regio Ducal in Milan. It was written for the castrato Venanzio Rauzzini, who was singing the part of the primo uomo Cecilio in Lucio Silla the previous year. While waiting for the end of the run (from 26 December 1772 to 25 January 1773), Mozart composed the motet for his singer, whose technical excellence he admired. Its first performance took place at the Theatine Church on 17 January 1773, while Rauzzini was still singing in Mozart's opera at night. Mozart made some revisions around 1780. In modern times, the motet is usually sung by a female soprano.
It is divided into three parts:
- Allegro – Recitative
Although nominally for liturgical use, the motet has many features in common with Mozart's concert arias, such as those drawn from his operas. Mozart also used elements of concerto form in this motet.
(Author unknown but possibly Rauzzini) 
Rejoice, resound with joy,
Fulget amica dies,
The friendly day shines forth,
Tu virginum corona,
You, o crown of virgins,
- K. Kuster, M. Whittall Mozart: A Musical Biography, Oxford University Press, p. 25
- "The Three Versions of Mozart's Exsultate, jubilate". pzweifel.com. Archived from the original on 15 July 2011. Retrieved 27 February 2008.
- L. Schenbeck (1996). Joseph Haydn and The Classical Choral Tradition Hinshaw Music, p. 235
- P. Barbier (1989). The World of the Castrati: The History of an Extraordinary Operatic Phenomenon transl. M. Crosland, Souvenir Press, p. 179
- Feldman, Martha (2007). Opera and sovereignty: transforming myths in eighteenth-century Italy. New York: University of Chicago Press. p. 56 n. 36. ISBN 978-0-226-24113-5.
- Hermann Abert, Mozart, (1909), transl. and revised by Cliff Eisen, Yale UP, 2007, pp. 150–1
- C. Eisen, S. Sadie. The New Grove Mozart Macmillan (2002), p. 11
- Corneilson (2006) Paul. "Arias, Concert" Cambridge The Cambridge Mozart Encyclopedia, C. Eisen, Keefe (editors), Simon P., Cambridge University Press, p. 21
- Küster, Whittall (1996) Konrad, Mary. Oxford Mozart: a Musical Biography Oxford University Press, p. 41
- K-165 Britannica.com
- "Archived copy". Archived from the original on 2011-07-15. Retrieved 2008-02-27.