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

Boygenius join Billie Eilish to perform 'When The Party's Over'.

Boygenius joined Billie Eilish tonight to perform 'When The Party's Over' at Electric Ballroom in London. After they performed the track, Eilish shared with the audience, “I’m in love with all 3 of them.”

Watch the performance below...