The document discusses the verse patterns of dialogue poems in the Cancionero de Baena, an important collection of Spanish poetry from the 15th century. It analyzes the evolution of verse and stanza forms, variations in rhyme, different modes of performance, and the practice of contrafacture, where new texts are fitted to preexisting melodies or poems. Finally, it considers the Romance, European, and American poetic traditions that these dialogue poems relate to.