DIGITAL Leonin:Organum Duplum / P... Pro Musica Antiqua, Safford Cape eAlbum Audio SCOPRI Leonin:Organum Duplum / Perotin: Organum Quadruplum / Machaut: Messe de Nostre Dame / Dufay: 5 Sacred Songs Pro Musica Antiqua, Safford Cape SCOPRI