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

Watch Haim cover Robyn's 'Show Me Love'.

During a piano session for BBC Radio 1's Phil Taggart, Haim performed a cover of Robyn's 'Show Me Love', as well as a stripped-back rendition of their own song 'Hallelujah'.

Watch both performances below...