Original tekst: Ab ortu solis. Tract for Votive Mass of the Blessed Sacrament. William Byrd. A cappella. Sacred , Motet , Eucharistic song. Language.
Oversættelse: Ab Ortu Solis. Sacred, Motet, eukaristiske sang. Sprog. Latin. Motet i to dele. Prima pars. Ab Ortu Solis.