subdued recording of great Latin Polyphony
Latin Renaissance ecclesiastical polyphony, with no less than 2 versions (fast and faster) of my favorite song of all time, Josquin's "Ave Maria" a'4, and good versions of Victoria's excellent "O Regem Caeli" and the only recording I can find of Cristobal de Morales' "O Magnum Mysterium." Incredible rest, meditation, and study music.