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

Watch: Harry Styles performs acoustic 'Cherry' for Vogue.

To accompany his Vogue cover, Harry Styles has also performed an acoustic rendition of 'Cherry' for the magazine, which arrives with a behind-the-scenes look at the shoot.

Watch the video below...