Original: Cappella Coloniensis. Gabriele Ferro. 1954-2004. Choir sheet music. Cappella Coloniensis. 1954-2004. by Paolo Barbacini.
Traduction: Chapelle Coloniensis. Partition chorale. Chapelle Coloniensis. Paul Barbacini. Ulf Bjorlin. Chapelle Coloniensis. Cologne Chamber Choir.