"Princess Turandot" is an opera composed by Giacomo Puccini, first performed in 1926. The story is set in ancient China and revolves around the cold-hearted princess, Turandot, who challenges her suitors to answer three riddles. If they fail, they face execution, but if they succeed, they win her hand in marriage. The opera explores themes of love, sacrifice, and the struggle between emotion and intellect. The character of Calaf, a brave prince, falls in love with Turandot and ultimately risks his life to win her heart. The famous aria "Nessun dorma" is sung by Calaf, expressing hope and determination.