In Northeastern Brazil there is a kind of musical game where two people begin singing and making rhymes, and challenge each other to create a better story on a given theme. This musical genre/game is called “desafio”. Toccata and Divertimento is based on the mood and melodies found on the desafio and as such, the two instruments will dialog, sometimes imitating, and sometimes challenging each other. The themes and the rhythm of the piece are based on modal melodies from the baiao, a very popular dance from Northeastern Brazil.