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

Billie Eilish to release 'Party Favor' 7".

For Record Store Day 2018, Billie Eilish is releasing a pink vinyl limited-edition 'Party Favor' 7" with a B-Side of her 'Hotline Bling' cover, which is limited to only 2000 copies.

More info here.