Turandot. Puccini began working on the opera Turandot in 1920. The next year, he started composing the music. Two years later, in 1924, Puccini had all but finished the opera's final duet. Puccini disliked the text of the duet and postponed composing it until he was able to correct the text. When he finally chose the words for it, two days later he was was diagnosed with throat cancer. Having decided to travel to Belgium for treatment and surgery the last week of November 1924, Puccini died as a result of the surgery on November 29. Therefore, the opera itself was never finished by Puccini. Learn more about Turandot and "Nessun Dorma".
by Aaron Green, About.com Guide