It's been nearly a decade since Loreena McKennitt's last studio album,The Book of Secrets, but An Ancient Muse picks up the caravan exactly where she left off on her mystical journey through the cultures of the Middle East and northern Sahara. The Canadian singer opens this album the same way as she did her last two recordings: with an incantation, calling out in a wordless voice across an echoing space, cleansing the air and the mind. What follows is a lot like those albums as well, a pan-global excursion centered on Middle Eastern themes and instruments cast into a dramatic exotica. . --John Diliberto