The most impressive recent recording is undoubtedly ‘Codex Calixtinus’(no. 1 in the list below), a boxed set of four discs that presents virtuallythe complete music of the manuscript entitled ‘Jacobus’, still preserved atthe cathedral of Santiago de Compostela. To be sure, though it has not drawnany comment in this department, the twenty polyphonic pieces that form theappendix to this collection of music have been recorded complete in recentyears (Sequentia and Ensemble Venance Fortunat have each devoted a disc tothe collection), and the fourth disc of this set duplicates them. Some ofthese pieces have long been known on records, for they rank with the StMartial sources as the most important examples of polyphony before the NotreDame period.