Both Mozart and Salieri are portrayed conducting an orchestra in the modern manner — standing at the front and waving their arms. In the eighteenth century the conductor would typically play the first violin or harpsichord, with the other musicians watching his head and hand movements. It was the expansion of large orchestras in the nineteenth century that obliged the conductor to give up his instrument and assume a more visible position.
In the scene where Mozart joins the orchestra for "The Magic Flute", he is depicted performing the bell solo on a celesta. However, the celesta did not exist until 1886; the passage would originally have been played on a glockenspiel.
At the beginning of the film, the elderly Salieri plays the first eighteen notes of "Serenade No. 13 for strings in G" to his confessor, who then takes up the remainder of the tune. "Serenade No. 13 for strings in G" (also known as "Eine kleine Nachtmusik") was sold in 1799 by Mozart's widow to the German composer Johann André, who later published it in 1827, two years after Salieri's death.
Mozart is shown playing carom billiards with what appears to be a tipped cue. The first tipped cue was not invented until 1807. Additionally, the cue tip appears to be coated with blue-dyed chalk, which was invented in 1897.
During the opera/ballet sequence, the dancers wear costumes with clearly visible zips.
Mozart remarks that the music he is composing "is going to explode like a bombshell". However, the use of the word bombshell as a colloquial term for something sensational did not emerge in English until about 1860, and in German only in the 1890s — roughly a century after Mozart's death.
Whilst the confessor waits to enter Salieri's door from the asylum corridor, a woman can be seen wearing a red business suit jacket featuring conspicuous 1980s-style shoulder pads.
During Mozart's attempt to teach the daughter of Heir Schlumberg at the piano, he performs an extended run on the keyboard that employs a flattened 3rd, 5th and 7th — a pattern that today would be recognised as characteristic of a blues or jazz scale. Such scales did not emerge until the 20th century, and had they been sounded, even inadvertently, during the Classical period they would have been regarded as shocking.
The Nipples of Venus that Salieri eats are clearly coated in white chocolate. White chocolate wasn't developed until 1936 by Nestlé.
When Mozart is asked to play in the style of Bendel — referring to the German pianist Franz Bendel — he replies "I don't like Bendel." Franz Bendel, however, was not born until 1833.











