sentences:  It provides an interlude expressing lyrical simplicity and love in contrast with the atmosphere of hypocrisy, jealousy, double-dealing, and feuding in medieval Florence.It provides the only set-piece in the through-composed opera.The aria was first performed at the premiere of "Gianni Schicchi" on 14 December 1918 at the Metropolitan Opera in New York by the popular Edwardian English soprano Florence Easton.