The critical edition of "Stiffelio" from which this score is derived was the first to reinstate significant portions of the opera that had been presumed lost for more than a century. It was used for the 1993 premiere of "Stiffelio" at New York's Metropolitan Opera, the first time the opera was performed as Verdi wrote it. This piano-vocal score gives musicians and admirers of Verdi the chance to possess "Stiffelio" in authoritative form.