During the scene where Mozart is being carried away in his coffin by horse and cart there is a brief shot where he is being taken down a muddy path and a farmer is seen with his cows. If you look closely to the left side of the screen you can see a large overhead power line. If you look even more closely you can even see the wires coming out of the pylon. The movie is set in the 18th century and obviously it obviously should not be there.
The producers purposely went with relatively unknown actors for the film, because they thought they'd be more believable than stars who people already identified in different roles.