Will Sharpe and Paul Bettany excel as real-life musical maestros engaged in entirely fictional beef. During their lifetimes, Wolfgang Amadeus Mozart and Antonio Salieri were reportedly regular collaborators with a healthy mutual respect for each other’s immeasurable musical talents. In death, however, the composers have repeatedly been depicted as the classical period’s answer to Tupac and Biggie. Ever since Alexander Pushkin stirred the pot with 1830 play “Mozart and Salieri,” Nikolai Rimsky-