And now for the surprising part. First, the disc's subtitle. To allege that these are 12th- century chants is rather dangerous considering that the inclusion of the lament O monialis concio, dedicated to one of the abesses of the convent in Burgos on her death, would put us in the second third of the 14th century. Secondly, the "French" way of pronouncing works conceived on Spanish soil is debatable, to say the least. Scholars have acknowledged the influence of the abbey of Fontevraud on Las Huelgas, but taking this relationship to the point of pronouncing the lyrics in the same way is perhaps stretching it a little too far. And third, the planctus Plange, Castella misera, for the death of King Sancho III, has been incomprehensibly tampered with. The last three lines of the piece have been omitted, leaving it incomplete, without any mention of this alteration. It's a pity that the high quality of the group's performance has not been matched with the same level of musicological scholarship. JUAN CARLOS ASENSIO