From the fifteenth century to the beginning of the nineteenth century, devotional music played a fundamental role in the Iberian world. Songs in the vernacular, usually referred to by the generic name of 'villancico', but including forms as varied as madrigals, ensaladas, tonos, cantatas or even oratorios, were regularly performed at many religious feasts in major churches, royal and private chapels, convents and in monasteries. The sixteen essays in this volume provide the first broad-based survey of this important genre.