In order to achieve the best development of our work, which has an interdisciplinary character and talks about the Spanish lyrical ballads from the Golden Age, it is essential to compare the poetical works of this age with the poetic-musical sources that we study. In that way, we hâve elaborated a list of poems in Spanish from Obras métricas (1665) written by the Portuguese poet Francisco Manuel de Melo (1608-1666). This list is based on the importance of the musical references which precede the poems and which, sometimes, include the names of the composers. In this way, we have been able to discover three «melodinos» poems set to music in the Cancionero Poético-Musical Hispánico de Lisboa whose adition we are preparing. Two of these lyrical ballads were set to music by the masters Luiz de Christo (1625-1693) and Filipe da Madre de Deus (ca. 1630-in or after 1688).