Sufjan Stevens will play a Dome show alongside DJ Shadow and Friendly Fires at The Great Escape 2011.
The lo-fi, alt-folk popster will headline on the Saturday (14 May) night, with the music festival to run across several Brighton venues from 12-14 May.
To ensure guaranteed access to the Dome shows, attendees can top up their festival wristband for just £6 per show or pay £18.50 just for access to that one venue.
The Great Escape Festival will bring more than 15,000 music fans over 300 bands playing across 30 venues over three days in Brighton as well as hosting a music conference for 3,000 industry professionals.
Early Bird tickets for The Great Escape 2011 are on sale for a limited time at £45 for a weekend pass.