The "Flower Duet" is a duet for soprano and mezzo-soprano in the first act of the tragic opera  Lakmé, premiered in Paris in 1883 and composed by Léo Delibes.

It is sung by the characters Lakmé, daughter of a Brahmin priest, and her servant Mallika, as they go to gather flowers by a river.

The duet is frequently used in advertisements and films and is popular as a concert piece. The duet has become a staple of British Airways' brand image, having first been adapted for the track "Aria" in the airline's "face" advertisements of the 1980s by Yanni and Malcolm McLaren. It has been featured in many subsequent advertisements for the airline and is used as its inflight boarding music. More recently, it has been heard in bits by The Kids In The Hall and Astron-6, and as soundtrack in films such as Carlito's Way, I've Heard the Mermaids Singing,  The Hunger,  Meet the Parents, Anomalisa, Lara Croft: Tomb Raider – The Cradle of Life, Piranha 3D, The Angry Birds Movie, The Occupant and True Romance; and television shows including Sex and the City, Regular Show,Parks and Recreation and The Simpsons.

The duet's time signature is 6/8; its key is B major, except for the part "Mais, je ne sais" until "les lotus bleus," which is in G major. That part has a slightly faster tempo (=160) than the surrounding lines (=144). The final reprise is in the original key and tempo. A performance takes about six minutes.

Read more: https://en.wikipedia.org/wiki/Flower_Duet