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

Watch: Marian Hill and Lauren Jauregui perform 'Back To Me' together live.

During their recent set at SnowGlobe Festival, Marian Hill performed their song 'Back To Me' live for the very first time, joined by special-guest Lauren Jauregui (of Fifth Harmony).

Watch fan-filmed clips of the performance below...