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

Watch: Calvin Harris & Dua Lipa perform 'One Kiss' live on The Graham Norton Show.

To celebrate their collaboration 'One Kiss' reaching #1 on the UK singles chart this week, Calvin Harris and Dua Lipa appeared on The Graham Norton Show to perform the song together live.

Watch the performance below...