Salieri's music slowly disappeared from the repertoire between 1800 and 1868 and was rarely heard after that period until the revival of his fame in the late 20th century. This revival was due to the fictionalized depiction of Salieri in Peter Shaffer's play "Amadeus" (1979) and its 1984 film version. The death of Wolfgang Amadeus Mozart in 1791 at the age of 35 was followed by rumors that he and Salieri had been bitter rivals, and that Salieri had poisoned the younger composer, yet this has been proven false, and it is likely that they were, at least, mutually respectful peers.