New Zealand export Ladyhawke is the latest name confirmed for this year's Eden Sessions.
The singer will support The Kooks on 18 July with Kasabian (4 July), Razorlight (9 July) and Oasis (14 July) also set to play the Cornwall event.
Speaking about the latest addition, festival director Peter Hampel said: "Ladyhawke continues the Sessions tradition of great support acts. Elbow, Editors and Hard-Fi have all opened Sessions before and Ladyhawke is set to make big waves this year. Alongside The Kooks, this will be a stunning evening of live music."
Tickets to each event are on sale now priced at £35.
Click here to buy Eden Sessions tickets.
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.