Les deux aveugles (The Two Blind Men) is a one-act bouffonerie musicale, in the style of an operetta, by Jacques Offenbach to a Frenchlibretto by Jules Moinaux. Operetta (literally, little opera) is a performance art-form similar to opera, though it generally deals with less serious topics. ... Jacques Offenbach (20 June 1819 â 5 October 1880), composer and cellist of the Romantic era, was one of the originators of the operetta form. ... A libretto is the complete body of words used in an extended musical work such as an opera, operetta, masque, sacred or secular oratorio and cantata, musical, and ballet. ...