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

Watch: Lorde performs 'Solar Power' live on The Late Show.

Following an interview with Stephen Colbert on The Late Show recently, Lorde tonight appeared in-person to perform her new song 'Solar Power' live on the rooftop of the Ed Sullivan Theater.

Watch the performance and interview below...