Peter Shaffer's 1979 stage play about the fictional rivalry between Salieri and Mozart (7)

I believe the answer is:

amadeus

(Other definitions for amadeus that I've seen before include "Mozart's second name" , "Biopic" , "Mozart play/film" , "Mozart's middle name" , "See 12" .)

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.