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

Mumford & Sons covering The Beatles’ 'With A Little Help From My Friends'. Literally.

At this year’s Bonnaroo, Mumford & Sons invited My Morning Jacket, The War on Drugs, Hozier, Dawes, Ed Helms, and Danny Clinch on-stage to perform a cover of The Beatles’ classic 'With A Little Help From My Friends' together live.

Watch the performance below...