Sir Tom Jones headlines Radio 2 Live In Hyde Park, as the station's "festival in a day" returns for 2012.
Jo Whiley and Simon Mayo host seven hours of live coverage featuring performances from BBC Sound of 2011 winner Jessie J, British rockers Status Quo, Simply Red frontman Mick Hucknall, London songstress Paloma Faith, Scottish funksters Average White Band and hot new talent Emeli Sandé.
Also confirmed to perform are American country music stars The Band Perry and Norwegian band Katzenjammer.
Last year, over 25,000 music fans packed into London's Hyde Park to hear artists including Chic, Lenny Kravitz, as well as Jools Holland and his Rhythm and Blues Orchestra.
This year's concert will be available to watch live online, with highlights also available on the BBC Red Button in the following week.