To whom does Antonio Salieri tell his story of envy and revenge in the film "Amadeus"?

In the 1984 film "Amadeus", an elderly Antonio Salieri (F. Murray Abraham) confesses to the murder of a former colleague, Wolfgang Amadeus Mozart (Tom Hulce). Salieri will attempt to kill himself by slitting his throat. He will be taken to a mental asylum where a priest, Father Vogler (Richard Frank), implores him to confess. He will tell the priest a tale of jealousy and betrayal…and perhaps even murder.

The film opens in 1825 on the eve of the elderly Salieri's death. The life, success and troubles of Mozart are told by Salieri, who is insanely jealous of Mozart's talent. He also claims that he murdered his adversary. Prior to killing him, Salieri's persona is depicted as Machiavellian and Iago-esque in character. He uses his connections to keep Mozart as the underdog and to slowly destroy Mozart's life and career.

Salieri greatly resented Mozart for both his hedonistic lifestyle and his undeniable talent. The highly religious Salieri was totally consumed by his jealousy and became obsessed with Mozart's downfall. His schemes had dire consequences for both men. In the end as Salieri tells Vogler, Mozart wins immortality with his musical genius and he (Salieri) is considered a mediocre composer by his peers, friends, and critics.

Milos Forman's masterful drama "Amadeus" wins eight Academy Awards, including Best Picture, Best Director, Best Adapted Screenplay, and Best Actor for F. Murray Abraham.