The Parisian demi-monde is celebrating wildly in the salons of the courtesan Violetta Valéry. Alfredo Germont enters the hall, and with him the love he celebrates in his famous drinking song. Violetta, who has never experienced such romantic, fiery affection, is torn between responding and fear. In this first act of Giuseppe Verdi's melodramma, the opera hits flow seamlessly into one another, from exuberant choruses to grand duets and finally the famous ‘È strano! è strano!’ sung by the title heroine.