Jane's Addiction and Nine Inch Nails are among the latest names confirmed for this year's T In The Park.
Both are set to play the Radio1/NME Stage on the Saturday (11 July), while Josh Hommes' band Eagles Of Death Metal will play the arena on the Sunday (12 July).
Organisers have announced that The View, Glasvegas and Pet Shop Boys will top the bill in the King Tut's Wah Wah Tent.
Speaking about their appearance, Neil Tennant of Pet Shop Boys said: "We are really looking forward to playing our first festival in Scotland. Unbelievably, it's six years since we last played a concert in Scotland so this is going to be special!"
Elsewhere current favourite Lady GaGa and rising star Gary Go will also join headliners Kings Of Leon, The Killers, Blur and Snow Patrol and many more at the Scottish festival.
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.