Its most famous aria demands that no rest be taken, which is a result of Calaf's success and his deal with the title character.  
Among the most moving pieces in this opera is "'Liu! Liu! Sorgi!" sung at the death for a character's unwillingess to betray the man she loves.  Another is the brief aside of Ping longing for his small home covered in bamboo, far away from the executions he must help arrange.  Its most famous aria demands that no rest be taken, which is a result of Calaf's success and his deal with the title character.  FTP name this opera about the wooing of the daughter of the Emperor of China, famous for the aria "Nessun Dorma," the last opera of Giacchimo Puccini.
Among the most moving pieces in this opera is "'Liu! Liu! Sorgi!" sung at the death for a character's unwillingess to betray the man she loves.  
Turandot