Forrás: PATROCINIUM MUSICES. Orlandi di Lasso, Illustr. Ducis Bavariae, Chori Magistri, Cantionum, quas mutetas vocant, opus novum. PRIMA PARS..
Fordítás: The first book of the Patrocinium Musices series contains 21 motets, seven each for 4, 5 and 6 voices. M.D.LXXIII..