Razorlight are the latest act to be confirmed for this year's Eden Sessions.
Johnny Borrell and Co will headline the event which is held at the Eden Project in Cornwall on 9 July.
They join Kasbain (4 July), The Kooks (18 July) and Oasis (14 July) on the bill.
Speaking about the confirmation, Peter Hampel, Eden's Creative Director, said: "With four bands confirmed already, this year’s Sessions sees some of the worlds’ greatest guitar bands descending on Cornwall. We’ve had our sights on Razorlight for the last three years and they will be a real highlight."
Tickets for the Razorlight show go on sale next Tuesday (10 March), while passes for Kasabian and The Kooks are on sale now.
Passes to see Oasis have already sold out after the gig was rescheduled from last September after Noel Gallagher was attacked at V Festival in Canada.
The Eden Sessions 2009, which returns for its eighth year this time around, will run over almost the entire summer.
Previous bands to have preformed at the festival in the past include Kaiser Chiefs, KT Tunstall, The Verve and The Raconteurs.