The aspects of reality in the movie include his behavior of being a "vulgor man", him being a protégé at composing music, and being a depressed drunk.
The aspects of fiction include: Mozart having only one kid, his laugh, Salieri essentially killing Mozart, and Salieri trying to commit suicide.
EX. Fiction
Salieri comes up with a complex plan to gain ultimate victory over Mozart and over God. He wears a mask and costume similar to one he had seen Leopold wear and commissions the composer to write a requiem mass, giving Mozart a down payment and the promise of an enormous sum upon completion. Mozart begins to write the piece, the Requiem Mass in D minor, unaware of the true identity of his mysterious patron and his scheme: to somehow kill him when the work is complete. Glossing over any details of how he might commit the murder, Salieri dwells on the anticipation of the admiration of his peers and the court, when they applaud the magnificent Requiem, and he claims to be the music's composer. Only Salieri and God would know the truth—that Mozart wrote his own requiem mass, and that God could only watch while Salieri finally received the fame and renown he deserved.
Mozart's financial woes continue and the composing demands of the Requiem and The Magic Flute drive him to the point of exhaustion as he alternates work between the two pieces. Constanze leaves him and takes their son with her. His health worsens and he collapses during the premiere performance of The Magic Flute. Salieri takes the stricken Mozart home and convinces him into working on the Requiem. Mozart dictates while Salieri transcribes throughout the night. As Constanze returns that morning, she tells Salieri to leave. Constanze locks the manuscript away despite Salieri's objections, but as she goes to wake her husband, Mozart is dead. The Requiem is left unfinished, and Salieri is left powerless as Mozart's body is hauled out of Vienna for burial in a pauper's mass grave.
