the very intense Requiem sequence contains a key line the tv version of Good Omens gave to Aziraphale - “you’re going too fast for me” - and that in Salieri’s mind, he’s actually involved less in a feud with Mozart than in a feud with God, or an attempt to get an answer from God that’s denied to him, I wouldn’t be surprised if there’s been some subconcious influence there. Not least because Amadeus is actually very funny throughout

OMG, I hadn't thought of it, but it totally fits!

My mother loved it, and said it was one of the best about a composer, precisely because of the use of music and showing him working (oh, the terrible composer bio movies I saw with her. Ask me about Impromptu and Hugh Grant's fake nose. Go on, just ask me), but she also said that historical accuracy wasn't the point of the story. (She did think the before-death scenes were a bit melodramatic.) I read Equus before seeing it and Lettice and Lovage afterward, and I do think Shaffer tends to write kind of intense two-handers with extreme clashes between opposing personalities, altho L&L has a reconciliation instead of a tragic ending. Wasn't there some theory that Mozart was poisoned by a jealous husband?

It's sort of like the Great Gatsby, if Nick Carraway had been the one to shoot Gatsby in the pool.