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

Watch: Lorde covers Bruce Springsteen's 'I’m On Fire'.

Returning the favour after Bruce Springsteen covered Lorde's single 'Royals' at Auckland shows back in 2014, Lorde covered Springsteen's 'I’m On Fire' on-stage last night in Christchurch, segueing into her own song '400 Lux'.

Watch fan-filmed footage of the cover below...