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

Watch: Alt-J perform 'In Cold Blood' live on The Tonight Show.

| by Shahlin Graves

With a little help from Questlove and a brass section, Alt-J performed new song 'In Cold Blood' live on The Tonight Show Starring Jimmy Fallon, ahead of the upcoming release of the band’s 'Relaxer' album on June 2nd.

Watch the performance below...