Those mystery manbots Daft Punk were surprise guests at Phoenix's Madison Square Garden show.
The electro duo popped up on stage with their fellow Frenchmen to help close their show, playing a snatch of 'Harder, Better, Faster, Stronger' before an all-in version of 'Around The World'.
Daft Punk also added some beats to Phoenix's song '1901'
They also came together, arm-in-arm, with the band for a farewell bow.
It's reportedly the first time the duo have hit the stage since their 2007 Alive Tour.
Daft Punk are priming themselves for the release of their soundtrack to the remake of Tron on December 7.
Check out some shaky mobile footage of the gig below.