"BYRD, WILLIAM |f [componist]" . "Gradualia, liber 001. 1605. Ave verum corpus, koor (4 st.)" . "71900" . "142673 147286 71900 BYRD, WILLIAM |f [componist] BYRDE Gradualia, liber 001. 1605. Ave verum corpus, koor (4 st.)" . "71900" . . "142673" . . "Gradualia, liber 001. 1605. Ave verum corpus, koor (4 st.)" . . "147286" . . .