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Angelo (Анджело in Cyrillic; Andželo in transliteration) is an opera in four acts by César Cui, composed during 1871–1875, with a libretto by Viktor Burenin based on Victor Hugo's 1835 prose play, Angelo, Tyrant of Padua. This same play formed the basis of Saverio Mercadante's Il giuramento of 1837, Amilcare Ponchielli's La Gioconda, which premiered in the same year as Cui's opera (1876), and Alfred Bruneau's Angelo, tyran de Padoue of 1928.