THE ASCENT OF BALLADS 121 the Middle Ages. Frontier ballads, splashed with intense colour, represented the dramatic antithesis of Moors and Christians. Morris ballads, chivalrous and sentimental, expressed the single- ness of so many amorous hearts that the sound of Listen, Zaide, as I advise you, don't go strolling down my street would have prevented any real Zaide from strolling in any of the streets of Madrid. Once Juan de la Cueva had drawn on ballad material, though not ballad style, for his first national drama, the Siege of Zamora> the transfusion of ballads into drama proceeded rapidly. Lope de Vega built up an entire dramatic history of Spain from chronicles and ballads, interweaving ballad phrases into his verses in such a way that the original cannot be discerned from the new. He could do so the more readily because the best Castilian ballads cut short the narrative, leaving only the dialogue. The breathless dialogue between Ruy Velazquez and the avenging Mudarra is more dramatic than the more diffuse treatment of the same incident in Lope's Bastardo Mudarra. Calderon had not the same appreciation of the epico-dramatic element in balladry; to him ballads seemed to provide a simple conversational metre like the roundel. He slips from one to the other as his topics change. The conversational use of the 'romance' increased so much that Leandro Fernandez de Moratin used it as the unique metre of his Old Man and Girl, towards the end of the eighteenth centuiy. To do so was a notable impoverishment of the resources of poetical drama, which he abandoned in time; but it was eloquent evidence of the vivacity of ballads. The ballads of the younger Cid worked over materials taken from the lost epic of the Mocedades. The Mocedades had spoken of the feud between Diego Lainez and the father of Jimena. The boy Ruy Diaz had taken on himself his father's quarrel, killed the count, and harried the lands and washerwomen of the orphan heiress, until she could see no way of protecting her patrimony save by marrying her invincible enemy. She appealed to the king, and the king commanded the marriage. Ruy Diaz, in his flaming indignation, swore not to honour his wife until he had won five pitched battles, which the straggling epos proceeds to recount. But one of the ballads put a different complexion on the matter. Mind- ful that Ruy Diaz had been brought up with the Castilian princes 4615 R