The Flower Duet, from the opera Lakme

From Wikipedia:

The Flower Duet (Sous le dôme épais) is a famous duet for sopranos from Léo Delibes‘ opera Lakmé, first performed in Paris in 1883. The duet takes place in Act 1 of the three act opera, between characters Lakmé, the daughter of a Brahmin priest, and her servant Mallika, as they go to gather flowers by a river.[1] Its ubiquitous presence in movies and popular music since the mid-1980s was inaugurated by its usage in the 1983 horror film The Hunger.

For more of Anna Netrebko and Elina Garanca in this 2007 performance at Baden-Baden , check out The Opera Gala: Live from Baden-Baden