Siderum Rector /
Byrd, William,1539 or 1540-1623,composer.
Wilkes, Roger,B.A.,editor.
For superius (soprano), discantus (mezzo-soprano), contratenor (alto), tenor and bassus (bass).
Caption title.
Motets.
Choruses, Sacred (Mixed voices, 5 parts), Unaccompanied.