Most people think of Christmas carols as originating from ancient--or at least olden-times, and indeed, many of the most enduring ones have survived for many centuries. Andrew Parrott and his Taverner Consort take us back seven centuries, in fact, and thoughtfully mix the old tunes ("Swete was the song," "This endere nyghth," "Nova! nova!") with more recent tunes. Parrott"s musicians offer interesting takes on such familiar carols as "Silent Night" and "God rest ye merry, gentlemen." "Silent Night" sounds like an Austrian folk tune, complete with guitar accompaniment that reportedly was used in its original performance; "God rest ye..." is performed in the style of an English country church congregation--and uses a different tune from the one we usually hear. Various period instruments add to the color and flavor, and the arrangements are original and very effective. --David Vernier