Turandot (1983)

From the world famous Arena of Verona, an international cast perform one of Puccini's best loved operas. The cruel Princess Turandot, ruler of China, will only wed a prince who can answer correctly her three riddles. Those who fail are executed. Prince Calaf, son of the exiled king of Tartary, falls in love with Turandot as soon as he sets eyes on her, and despite the protestations of his friends and family sets out to pass her test.

Unfortunately the movie Turandot is not yet available on HBO Max.