The Vienna #Anfossi Opera was #IlCuriosoIndiscreto (performed on 30 June 1783)! But defamation on #FintaGiardiniera was so widespread that #Mozart was already called #Rewriter of #Anfossi! Substitution/Integration Arias by #Mozart are now K418 Vorrei; K419 No No; K420 Per Pietà!