Boys Noize are among the first names announced for T In The Park's Slam Tent.
The DJ will be joined by trip hop stalwart Mr Scruff and Laurent Garnier in the arena, with the latter making his sixth appearance at the festival.
Elsewhere Virtual Festivals' pick of 2009 Passion Pit are set for the Futures Stage alongside French electro kids M83.
The event, which won Best Festival Line-Up at last year’s UK Festival Awards, will be headlined by Kings Of Leon, Blur, The Killers and Snow Patrol.
The Specials, Lily Allen, The View, Franz Ferdinand and James are also set for Scottish festival.
Click here for the latest T In The Park line-up.
T In The Park 2009 will take place at Balado, Kinross-shire from 10-12 July.
The festival is renowned for its unbelievable atmosphere, with the Scottish fans giving as much energy to the headliners as they do to breaking bands in the T-Break stage and the traditional ceilidh dance tent.
The 2009 edition of the event will welcome back the Healthy T area, which allows revellers to eat healthily whilst away for the weekend, as well as promoting green initiatives – with T becoming the largest carbon-neutral festival in the world last year.
The festival has twice been winner of the UK's Best Major Festival Award back in 2005 and 2006.