Falstaff (opera)
This takes place in the Garter Inn ().  Dr Caius, who is a rich man with servants, complains that Falstaff has beaten his servants and that Falstaff’s two friends Bardolfo and Pistola made him drunk and then stole his money.  Falstaff laughs at him.  He says he will never get drunk again unless he is in the company of good, religious people.  Bardolfo and Pistola in the background sing “Amen” until Falstaff stops them, complaining that they sing out of tune.