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

Taylor Swift performing 'Starlight' live for the very first time.

While in Newark, New Jersey, on her 'Red Tour', Taylor Swift was inspired by requests from fans via Twitter and Facebook to perform 'Starlight' live for the very first time.

Watch the performance below...

P.S. I don't count the JFK Charity Event as a proper first time, since tickets to that cost thousands of dollars.