Summer Camp Music Festival has started to roll out its 2011 artist lineup via its Twitter and Facebook pages. Each day the festival’s promoters have announced between four and five artists for the May 2011 event. The announcements began on Monday with Illinois-based jamband Brainchild and have gradually picked up steam. Recent additions include: Bela Fleck and the Flecktones, STS9, Keller Williams and The Avett Brothers, who will return to Summer Camp for the second year in a row. Lineup announcements for the 11th annual Summer Camp Music Festival will continue through the rest of the week when the festival’s complete lineup will be confirmed.

Summer Camp will take place from May 27-29, 2011. moe. and Umphrey’s McGee will once again headline the event.

Here’s a list of band’s and their confirmation order:

1. Brainchild
2. Chicago Farmer
3. Ryan Montbleau Band
4. Bela Fleck and the Flecktones (grammy)
5. Positive Vibra8ions
6. DJ Belly
7. Daedelus
8. Big Gigantic
9. STS9
10. Jaik Willis
11. Family Groove Company
12. Cornmeal
13. Keller Williams
14. The Avett Brothers