One of the first major Hollywood productions to shoot in Prague, Czech director Miloš Forman’s Oscar-winning Amadeus is still one of the most successful, frequently cited by the local Film Commission and Tourism Board as a highlight of foreign filming in the Czech capital.

Forman cast then-little-known actors Tom Hulce as Mozart and F. Murray Abraham as Salieri, but did you know that we could have gotten a much different cast?

After being presented at London’s Royal National Theatre in 1979, Peter Shaffer’s acclaimed play had its Broadway premiere in late 1980 with Ian McKellan as Salieri and Tim Curry as Mozart.

The hugely popular Broadway show ran for more than 1,000 performances over the next three years, and the roles changed hands numerous times. Towards the end of the run, Star Wars’ Mark Hamill replaced Curry as Mozart opposite John Wood as Salieri.