Il Trovatore, the opera that is supposed to be performed in A night at the opera (1935), the immortal Marx brothers film, has always been called in modern - and not so modern - times a surviving opera in the repertoire thanks to its musical excellence despite its deliriously absurd and exaggerated plot. In this sense, its companions in the 'popular Verdian trilogy', Rigoletto and Traviata, benefit from supposedly higher quality arguments. That is not true, Il Trovatore,...