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

Watch: Kacey Musgraves performs 'Slow Burn' live on The Late Show.

In support of her just released new album, 'Golden Hour', Kacey Musgraves appeared on The Late Show with Stephen Colbert to perform fan-favourite song 'Slow Burn' live.

Watch the performance below...