British Sea Power are among the first slew of acts confirmed for this year's Green Man Festival.
Critically acclaimed Bon Iver, Grammy nominated Wilco and Wooden Shjips have also been announced alongside Peggy Sue, Errors, Megson and Pivot.
It’s A Buffalo, She Keeps Bees and Golden Animals will also appear at the idyllic Welsh event along with 6 Day Riot, No Thee No Ess and Sound Carriers.
Bella Union will showcase some of their emerging new talent including Beach House and Peter Broderick, while The Future Sound Of London will appear as The Amorphous Androgynous and perform a Monstrous Psychedelic Bubble Exploding in Your Mind for seven hours during the weekend.
Tickets have also gone on sale with organisers announcing a special 'Holiday Ticket', which allows festival-goers to extend their stay for a further three-days and make the event a holiday as well as a festival for just an extra £30.
The other ticket prices are as follows:
£115 – adult weekend
£99 – student weekend
£50 – Teen (13-17 years)
Free – 12 years and under
£30 – Holiday ticket
Click here to buy Green Man tickets.
Green Man Festival 2009 will take place at Glanusk Park, Brecon Beacons in Wales from 21-23 August.
The festival will also feature art installations, literature and film tents, Welsh poetry, art and music, ceilidhs, theatre, science, comedy, Nature and Nurture massage area, a daily dusk till dawn bonfire and impromptu jamming sessions
Organisers have also announced the first of many new hidden surprises: Einstein's Garden, which will introduce thought provoking green issues in a fun and informative way.
There will also be plenty on offer for families with an extended children’s area which will have more workshops, entertainment and much more.