Ruth Cunningham, Marsha Genensky, Susan Hellauer and Johanna Maria Rose are the acclaimed, prolific a cappella group, Anonymous 4, and the beautiful polyphonic music in this CD almost didn't make it to us because of the invasion of Hungary by the Turks in 1541. The iconoclastic Turks destroyed artworks in all forms, including liturgical manuscripts. Fortunately some of the manuscripts were copied or carried away by fleeing monks, nuns and clerics. These plainchants are remarkably consistent, part of a major effort towards liturgical and musical uniformity. Ethereal, hauntingly beautiful, one can close one's eyes and be in the cathedral where the choir sent this perfect, sacred music heavenward­as prayerful, meditative and joyful for the singers as for the worshippers. 20 sublime pieces.