Turandot To obtain permission to marry her, a suitor has to solve three riddles; any wrong answer results in death. Calaf passes the test, but Turandot still refuses to marry him. He offers her a way out: if she is able to learn his name before dawn the next day, then at daybreak he will die. In the original story by Nizami, the princess sets four conditions. The first is "a good name and good deeds", and then the three challenges. The opera was unfinished at the time of Puccini's death in 1924, and was completed by Franco Alfano in 1926.
Unfinished creative work missing music had to be provided by Franco Alfano for the premiere in 1926. Recently, Luciano Berio composed an alternative ending. Alban Berg had only finished the first two acts of his opera "Lulu" at the time of his death in 1935. Due to objections from his widow it was not until 1979 that a full version was performed, with music for the final act devised by Friedrich Cerha using Berg's sketches. Other musical works which are unfinished but performable, are simply given in their incomplete state. Schubert's symphony is the most famous, but Anton Bruckner's Ninth Symphony is performed