Hilltop Hoods, King Charles, Ren Harvieu and Lonsdale Boys Club will also play sets at the three-day music festival in Scotland between July 6-8.
The Parlotones, Dog is Dead and Blood Red Shoes will join the bill, which is expected to play to over 85,000 fans per day over the weekend.
Snow Patrol, Kasabian and The Stone Roses are this year's headliners, while Florence + the Machine, Noel Gallagher, The Vaccines and Tinie Tempah will play sets.
New Order, David Guetta, Calvin Harris, Emeli Sandé and The Maccabees will also perform across the festival's stages.
Tickets for T In The Park 2012 are on sale now.
Watch the music video for fun.'s 'We Are Young' below: