Barbara Frittoli as Maria Boccanegra, Dmitri Hvorostovsky as Simon Boccanegra, and Roberto De Biasio as Gabriele Adorno in the final scene of Giuseppe Verdi’s Simon Boccanegra at the Metropolitan Opera, January 2011. The original version of the opera was premiered in 1857 and was not a success; Arrigo Boito’s first collaboration with Verdi was his revision of the libretto for a new version, which was first performed in 1881.