During the Renaissance period, composers regularly wrote what are now called “parody Masses” or “imitation Masses” – Mass compositions that used preexisting songs as a melodic basis. For some reason, the most popular of these songs was a brief chanson called “L’Homme armé,” a musical warning to watch out for the guy with a weapon. More than forty “L’Homme armé” Mass settings by such eminent composers as Guillaume Dufay, Johannes Ockeghem, and Antoine Brumel were published during the 15th and 16th centuries and survive today – and the great Franco-Flemish composer Josquin des Prez wrote two. Both are featured on this fine recording by the Tallis Scholars choral ensemble. Helpfully, they open the program with a robust rendition of the original song, making it easier for listeners to track the original melody as it snakes its way through the two polyphonic Mass settings.