Phillip Glass has written numerous dramatic operas.
 Composed in spring to fall of 1975 in close collaboration with Wilson, Glass's first opera was first premiered in summer 1976 at the Festival d'Avignon, and in November of the same year to a mixed and partly enthusiastic reaction from the audience at the Metropolitan Opera in New York City
 Glass's and Wilson's opera includes musical settings of Latin texts by the 1st-century-Roman playwright Seneca and allusions to the music of Giuseppe Verdi and from the American Civil War, featuring the 19th century figures Giuseppe Garibaldi and Robert E

