Gathering of the Vibes festival has announced some amazing additions to their already-stellar 2015 lineup. The festival, which is held from July 30-August 2 in Bridgeport, CT, has just revealed additional artists that will be performing.

Perhaps the most noteworthy of the additions is Warren Haynes and the Seaside All-Stars, which will feature the likes of George Porter Jr., Branford Marsalis, Jackie Greene, Joe Russo, and Marco Benevento. Talk about an awesome ensemble!

The full lineup additions include a few more bands, like Tea Leaf Green, John Brown’s Body, Cabinet, Trevor Hall, Earphunk, Banooba, Nattali Rize & Notis, Fly Golden Eagle, and Band Together.

They’ll join a lineup that features headlining sets from Wilco, Ben Harper & The Innocent Criminals, String Cheese Incident (ft. Peter Rowan, David Grisman and more), Gregg Allman, and Weezer. For more information about Vibes’ 20th anniversary festival, head to their official website. You can see the lineup below: