MARSHALL: "THREE PENITENTIAL VISIONS," "HIDDEN VOICES." With soprano Cheryl Bensman Rowe. Nonesuch 9 79227-2 (compact disc). "Hidden Voices" is filled with cries and whispers, electronically sampled from various sources and processed in digital loops, with the distant purity of Rowe's soaring hymn only the icing on a complex confection. Art and craft are all of a part in Ingram Marshall's work, in a seemingly inevitable union of music and means. More traditionally developed, atmospheric tapescapes, the "Penitential Visions" share Marshall's love of bells with the "Visions."