The Hangout Festival just announced the initial lineup for their now annual event on the Gulf Shore. The three festival headliners are Tom Petty, Kings of Leon and a mystery band TBA soon. The band/artist’s name is blurred out on the official poster. The event takes place May 17th, 18th & 19th with a three-day pass on sale this Friday (2/15) for $209 and $229. Topping the undercard are Trey Anastasio Band, The Roots, Gov’t Mule, Moe., Jim James, Nicki Bluhm & The Gramblers, Anders Osborne, The Black Crowes, Galactic and The Shins. Check out the complete lineup and the official announcment video after the jump.

HANGOUT FESTIVAL – Initial Artist Lineup

Tom Petty & The Heartbreakers
Kings of Leon
Mystery Headliner – To Be Announced Soon
The Shins
Bassnectar
Kendrick Lamar
The Black Crowes
Slightly Stoppid
The Roots
Steve Aoki
Passion Pit
Ellie Goulding
Bloc Party
Gov’t Mule
Jim James
Porter Robinson
Public Enemy
Moe.
Galactic
Dirty Projectors
Grouplove
Toots and the Maytals
Lissie
The Breeders
Best Coast
Jason Isbell & 400 Unit
Twin Sister
Ryan Bingham
The Sheepdogs
Shovels & Rope
Moon Taxi
The Revivalists
Zion I
Lance Herbstrong
Anders Osborne
Twenty One Pilots
Delta Rae
Nicki Bluhm & The Gramblers
The Bright Light Social Hour
The Werks
The Tontons
Brassft Punk
The Kingston Springs
The Mowgli’s
Chancellor Warhol
Lufia and the Sun
The Weeks
Space Capone
Wild Cub
Colin Lake