Orchestra Rehearsal (Italian: Prova d’orchestra) is a 1978 Italian film directed by Federico Fellini. It follows an Italian orchestra as the members go on strike against the conductor. The film was shown out of competition at the 1979 Cannes Film Festival. Considered by some to be underrated Orchestra Rehearsal was the last collaboration between composer Nino Rota and Fellini, due to Rota’s death in 1979.

A group of scientists have developed the Resonator, a machine which allows whoever is within range to see beyond normal perceptible reality. But when the experiment succeeds, they are immediately attacked by terrible life forms.