Composers from Handel to Poulenc wrote many of their most breathtakingly beautiful pieces for the human voice. Natalie Dessay, Barbara Hendricks, Montserrat Caballe, Rolando Villazon and more celebrated singers perform Rachmaninov"s romantic Vocalise ; Barber"s heart-wrenching Agnus Dei ; Poulenc"s masterpiece O Magnum Mysterium ; Stravinsky"s Pulcinella ; the Gregorian chant Veni Creator Spiritus ; Debussy"s Les Chansons de Bilitis , plus Bach, Handel, Vivaldi, Puccini, Schubert, Faur+ª, Brahms, Mahler, Grieg and more!