PRINCE  of the

flute and ivy, all thy foes Record the bounty that thy grace bestows, But we, thy servants, to thy glory cling, And with no frigid lips our songs compose, And deathless praises to the Vine-God sing." In the middle ages the chant royal was largely used for the praise of the Virgin Mary . Eustache Deschamps (1340-1410) distinguishes these Marian chants royaux, which were called " serventois," by the absence of an envoi . These poems are first mentioned by Rutebeuf, a trouvere of the 13th century . The chant royal is practically unknown outside French and English literature . (E .