The main difference between Opera and the previous polyphonic vocal music is the unique melodic line, resulting from the merging of bass and singing. In polyphonic music different vocal lines work independently, overlapping one another and making a text often incomprehensible. Opera instead offered a new way for making words expressive and intelligible, by creating a single melodic line, supported by an accompaniment.
Much applauded at the Royal Opera House in London in the role of Werther directed by Antonio Pappano and alongside Joyce DiDonato and in Les Contes d’Hoffmann, Mr. Grigolo has recently appeared at the Met in New York, in Roméo et Juliette alongside Diana Damrau.
Opera, until then the favourite entertainment of aristocracy and educated classes, was going to change radically as a consequence of the French revolution. In the three decades of the rise and fall of Napoleon, opera social function changed completely and irrevocably.