The two volumes, coordinated by Graça Videira Lopes and co-edited by the National Library of Portugal, the Institute of Medieval Studies and CESEM – Center for the Study of Sociology and Musical Aesthetics (both research units of the Faculty of Social and Human Sciences – FCSH NOVA) , will be presented by Xosé Ramón Pena, specialist in Galician language and literature, next January 30, at 18:00, at the National Library of Portugal. The session will feature a musical intervention by Vera Inácio Cordeniz and Sérgio Peixoto (voices) and Abel Chaves (piano). The Minister of Culture, Luís Filipe Castro Mendes, will be present at the launch.