Dido, Muse and the Pixies will join The Strokes as headline acts at this summer's V Festival.
Dido recently won two Brit Awards
The twin festivals in Chelmsford, Essex, and Weston Park, Staffordshire, will be held on 21 and 22 August.
Massive Attack, Pink, Snow Patrol, Primal Scream and Athlete have also been confirmed to play at the weekend-long event.
Tickets go on sale at 0900 GMT on Saturday, with weekend camping and day tickets available.
Launched in 1996, the V Festival has a reputation of being less rock-orientated than others such as Glastonbury and Reading.
Dido, who said she would be sleeping in her tent, told Virgin Radio it was her first festival in her home country.
"I seem to have done festivals everywhere else and managed not to be in England during the summer.
"V was the natural choice for me. It just always seems to have such a nice
vibe and everyone comes away from it happy.
"It is a really good mix of music and the weather always seems to be quite nice, and it has posh toilets too."
"We last played V in 2001 and have been looking forward to coming back since then," Muse said in a statement launching the festival.
"It's a cool festival with a great vibe. The diverse styles of the bands performing always make for a really interesting line-up."
Last year's event was headlined by the Red Hot Chili Peppers and Coldplay, with appearances from David Gray and Ash.
Other acts who will play at the 2004 event include Kings of Leon, Keane and N.E.R.D - also known as production duo The Neptunes, who have worked with the likes of Justin Timberlake and Mary J Blige.
Chelmsford festival director Bob Angus said: "In the coming months we plan to unveil a host of additional acts to the already really strong line up.
"These will include both established and up and coming talent.
"New acts are particularly important to us - you only have to look back at past V Festivals which featured the likes of Coldplay, Amy Winehouse and Jamie Cullum when they were relatively unknown, as evidence of our commitment to new talent."