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

Watch: Arctic Monkeys perform 'Star Treatment' live for the very first time.

Arctic Monkeys performed 'Star Treatment' live for the very first time ever during their London show at the Royal Albert Hall last night, as part of a three-track encore to close out the night.

Watch fan-filmed footage of the performance below...