NERD took to the stage as the iTunes Live London Festival kicked off in the capital.
The American funk rockers - Pharrell Williams, Chad Hugo, and Shay Haley - played a set at trendy nightclub KoKo in Camden to launch the month-long music event. Kenna and Chester French also performed at the gig.
Other music acts set to play at the festival - sponsored by Apple's music download site - include Paul Weller, James Blunt, CSS, Suzanne Vega, Sam Sparro, The Ting Tings, McFly, Guillemots and Alphabeat.
The festival will see around 60 acts perform at KoKo over 31 days.
Peaches Geldof, the daughter of Bob Geldof, will be fronting ITV2's coverage of iTunes Live, according to The Sun.
The 19-year-old -- who will apparently also interview the bands -- has been quoted as saying: "I am excited. It should be lots of fun."