The full width of vocal music has been explored by New York-based a cappella group Western Wind. While their early albums focused on traditional New England vocal music and Southern folk hymns, their subsequent releases have included extended series of Jewish holiday and Christmas songs, and American pop music. The Judaica series, which includes A Musical Sabbath, The Birthday of the World, Chanukkah in Story and Song, The Passover Story, and Mazel Bueno: A Portrait in Song of the Spanish Jews, featured guest narration by Leonard Nimoy, Theodore Bikel, and Tovah Feldshuh. West...