Sensation, the 10th album by Irish choral ensemble An£na, brings together a wide assortment of music, all of it arranged or composed by its conductor, Michael McGlynn. While McGlynn's treatments may rankle purists, who, for instance, only want to hear Hildegard von Bingen performed by unaccompanied women's voices, when taken on its own terms, his cross-pollination of musical styles is never less than intriguing and is most often beguiling.