The “Missa Divi Xaverii” ZWV 12, an expansive and unusually richly scored work, marks a highlight in the œuvre of Jan Dismas Zelenka (1679-1745). It was composed in 1729 while he was working at the Dresden court.

The principal source of this first edition is the damaged autograph score which had long been kept under lock and key. Passages missing because of its damaged condition have been supplemented using secondary sources or reconstructed by Václav Luks, clearly marked as such in the music...