Crit. Ed. Fabrizio Della Seta. Par BELLINI VINCENZO. I PURITANI is the last work of Vincenzo Bellini: composed in nine months, from April 1834 to January 1835 (a gestation unusually long for that time), was performed for the first time in Paris, Théâtre Italien, 24 January 1835. The new Critical Edition is based on the autograph, on the libretto of the first performance and on four manuscript copies produced in the context of the Théâtre Italien in the first months of life of the work, three of which contain autographinterventions (these sources are now kept at the Biblioteca Comunale in Palermo, at the Museo Civico Belliniano in Catania, at the Archivio Storico Ricordi in Milano and at the Staatsbibliothek zur Preussischer Kulturbesitz in Berlin). This edition presents for the first time all the music composed by Bellini, it restores the sections deleted before or after the first performance in Paris and returns the modified sections of the Naples version. It consists of three-score volumes -introduced by a detailed reconstruction of the historical context - and of a 'Apparati' volume with a description of the Sources and the Critical Commentary to the musical text. / Opéra-opérette / Répertoire / Opéra