In 1718 Vivaldi entered the employment of Prince Philip of Hesse-Darmstadt who had been appointed governor of Mantua, then part of the Austrian Empire. His responsibilities seem to have been varied but probably the most important of them was to provide operas for his employer’s court. One of these was Tito Manlio, which was produced for the Mantuan Carnival season in 1719; and, if we are to believe a note by Vivaldi himself at the head of the score, written in the space of five days.

Vivaldi wrote Juditha Triumphans for the musically talented women of the Ospedale della Pieta, the Venetian orphanage with which he was associated on and off throughout most of his working life. The librettist, Giacomo Cassetti, described the work as a ''sacred military oratorio performed in times of war by the chorus of virgin singers, to be sung in the church of the Pieta''. The war was that into which Venice had entered against the Ottoman Empire and to which reference is made both in the body of the Latin text and in a ''Carmen Allegoricum'' which accompanied the text of the work's first performance.

Early in December 1787 Catherine II of Russia invited the famous composer to her court at St Petersburg where Italian opera was all the rage. A few days after his arrival the wife of the ambassador of Naples and Sicily died and Cimarosa was asked by him to compose a Requiem Mass for the funeral. Composers did not need to bother about being original in those days and Cimarosa could draw easily on a common stock of melodic ideas, but, nevertheless, his Mass is well shaped and certainly not a mere puce d'occasion.