Starsailor are among the latest names to be added to the T In The Park line-up.
They will be joined by mash-up legends 2 Many DJs, Tiga and one of Virtual Festivals' picks for 2009 La Roux.
The Dykeenies have also been added to the bill joining headliners Kings Of Leon, The Killers, Blur and Snow Patrol as well as The Specials, Franz Ferdinand, Peter Doherty, White Lies and more.
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.
There are still tickets on sale for the festival with weekend non-camping tickets priced at £145.
Click here to buy T In The Park tickets.
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 and organisers took away the Best Festival Line-up Award last year.