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

Watch: Mumford & Sons' new 'The Wolf' music video.

Mumford & Sons have released a new music video for 'The Wolf' - the latest single from their 'Wilder Mind' album - in which some rather familiar faces get dressed up in interesting disguises at Bonnaroo.

Watch 'The Wolf' music video below...