Amadeus is a stage play written in year 1979 by the English dramatist Peter Shaffer, freely depending on the lives of the composers Wolfgang Amadeus Mozart and also the Antonio Salieri. Amadeus was motivated by the Mozart and Salieri, which was short play by Aleksandr Pushkin which was then coverted into an opera of the same name by the Nikolai Rimsky-Korsakov. Shaffer later adapted Amadeus for a film released in year 1984. Dominant use is made of the music of the Mozart, Salieri and other composers of the time.
From the initial run, Shaffer has widely revised his play, including changes to plot details. At the starting of the tale, Salieri is an old man, having large outlived his fame, and is convinced he used poison to murder Mozart. Speaking honestly to the audience, he promises to make clear himself. The action then flashes back to the 18th century, at a time when Salieri has not met Mozart in person but has heard of him and his music. He respects Mozarts compositions and is thrilled at the possibility to meet Mozart in person, during a salon at which few of Mozarts compositions will be played.