When Joseph Haydn assumed the position as music director of the Court of Esterházy in 1766, following the death of his predecessor, Gregor Joseph Werner, he began by composing one of his first and most extensive Missa solemnis.

The title “Missa Cellensis” [later also known as the “Cecilian Mass”] and the date of an autograph score suggest that this work was probably commissioned by Prince Nicolaus Esterházy for the 600th anniversary of the pilgrimage church Mariazell located in Styria. With r...