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

Watch: The 1975's Matty Healy joins Phoebe Bridgers onstage for 'I Know The End'.

Kicking off the first night of her four-night residency at the O2 Academy Brixton in London, Phoebe Bridgers was joined by The 1975 frontman Matty Healy onstage during 'I Know The End' to contribute some screams.

Watch some fan-filmed videos of the performance below...