coup de main - noun
kü-də-ˈmaⁿ
Definition of coup de main : an attack that achieves complete surprise.

Watch: Lorde perform 'Green Light' at the Billboard Music Awards 2017.

Lorde took to the 2017 Billboard Music Awards tonight to perform her latest single, ‘Green Light’, performing with a karaoke-like set-up, whilst also donning a special one-off custom ‘Melodrama’ denim jacket.

Watch the performance below…