Hello good people,
The 4th 'Klementinum Baroque Evenings' programme includes a concert at St. Salvatora Zelenka's Miserere (I guess ZWV 57 [edit: confirmed as the less well known ZWV 56 w/ trombones and 4 soloists, not ZWV 57!]) and the awesome cantata Deus Dux, which 300yrs ago Zelenka composed in Vienna and which was performed in Prague.
Here's the nice looking programme pdf, showing a set of other great concerts too.
It will be directed by Robert Hugo with Capella Regia Praha (same as from the 2004 Suprahon CD recording of I Penitenti ZWV 63)