Digital Image Archive of Medieval Music :: Certa fortiter ora ferventur labora

Certa fortiter ora ferventur labora

Composer	Lassus, Orlande de (ca. 1532–1594)
Genre	Motet
Appears in	D-Mbs Mus. MS 1536 (C) D-Mbs Mus. MS 1536 (T) D-Mbs Mus. MS 1536 (B) D-Mbs Mus. MS 1536 (VI) D-Mbs Mus. MS 1536 (VIII) PL-WRu MS Brieg.Musik. K.40 (78v—79)