Tear Jerker / Amadeus

• Whilst Salieri is a bitter Villain Protagonist who sabotages Mozart's career and attempts to invoke the Scarpia Ultimatum with Constanze (in the director's cut and original play), he works incredibly hard on his music and vows utter obedience to God only to be (in his mind) overlooked and overtaken by the obscene Mozart. Made worse when you consider that he had no desire for fame whilst a child, only a desire to be able to express his music and dedicate it to God.
• The final scene between Mozart and Salieri. Unlike in the play, Mozart dies thinking that Salieri remained his friend to the end; tearfully begging for Salieri's forgiveness since Mozart thought that like every other arrogant noble in the film, Salieri did not respect Mozart's work or the man himself. Salieri, who at this point held secret contempt towards Mozart, is taken aback by this sudden and raw humility; the look on his face expresses clear regret for how he pushed Mozart to near death writing the requiem. It makes his suicide attempt at the beginning of the movie all the more depressing, screaming out loud for Mozart's spirit to forgive him for what's he's done.
• The death of Mozart, scored to his own death requiem (The Lacrimosa, which he only composed 8 measures of): only a handful of people attend his funeral, and custom dictates they cannot follow the funeral cortege to the burial site. Which is just as well, as at the cemetery the body is unceremoniously thrown into a mass-grave, with lime dumped on top to aid decomposition. To this day, no-one knows exactly where the real Mozart is buried (there's a local legend that the nightingales sing more sweetly over his grave than anywhere else in Europe).
  • Though historically, the real Mozart's body was not given a pauper's funeral nor placed in a mass-grave. By all accounts, Mozart had a perfectly normal burial for a citizen of his renown, based on contemporary Viennese custom, and the bill for said funeral was footed by his friend Baron Gottfried van Swieten. The idea that it he was placed in a mass grave is because his grave was described as a "common" grave. But a "common grave" was not in any way a communal grave, it was merely a term for a grave belonging to a citizen not of the aristocracy, although this properly also feeds into why Mozart's grave cannot be found. By Austrian law, a grave belonging to the aristocracy was to lie undisturbed forever, a common grave was only required to lie undisturbed for ten years, and which the city had the right to dig it up and use it for a later burial. Something like this probably happened to his grave at some point.
• Mozart's young maid who's in Salieri's service. She never really knew what was going on, but what happened will haunt her forever. What's more, despite clearly growing scared and disturbed of Mozart's erratic and self-destructive behavior, a part of her did grow to care for him; as Mozart's body is carted away, she is last seen sobbing uncontrollably.
• Constanze. The poor girl is so devoted and loving, and very young, and all she wants is to have a happy, loving family. She's willing to give Salieri sex if it will help her husband. When he sends her away, Mozart comes home to find her sobbing on their bed, with no explanation. Her husband's constant spending leaves them constantly broke despite the fact that works like a dog, and he dies mere minutes after she returns to him. In real life, she was left with their debt after Mozart passed away.
• Salieri's Appeal to Obscurity with Father Vogler, where he plays segments from two of his own compositions which are unrecognized, then plays one of Mozart's which the priest immediately grasps and begins humming along to. Then Salieri reveals the switch, and Father Vogler appears instantly grief stricken and horrified at having unknowingly contributed to Salieri's despair.
• Mozart, so worn down by overwork, under dramatically increasing financial pressure, crushed by his wife's disappointment in him, and convinced that the only actually paying commission he has is actually killing him, resorts to burning the candle at both ends by blowing off steam at late-night parties with the actors—and they only help him forget his worries for a moment.