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

Watch: James Blake covering Billie Eilish's 'When The Party's Over'.

After covering Billie Eilish's 'When The Party's Over' at a recent show, James Blake has now shared a stunning full performance of the song at the piano - a song he describes as "ridiculously good."

Watch the performance below...