Like every other festival in 2011, the All Good Music Festival is celebrating an anniversary. This year marks the jam fest’s 15th year, and to celebrate, three of the genre’s biggest names have been tapped to headline the festivities.

Furthur, moe., and Umphrey’s McGee will head this year’s edition of All Good, set to take place July 14-17 at Marvin’s Mountaintop in Masontown, West Virginia. Other confirmed heavyweights include Primus, Pretty Lights, John Butler Trio, Yonder Mountain String Band, and Keller Williams.

Galactic, Toots & the Maytals, JJ Grey and Mofro, The Infamous Stringdusters, Papadosio, Toubab Krewe, Big Gigantic, Hot Buttered Rum, Giant Panda Guerilla Dub Squad, Everyone Orchestra, and Orgone round out the rest of the festival’s initial lineup. Additional acts will be announced in the weeks and months ahead.

Three-day an four-day passes, priced at $139 and $159, respectively, are now available via the festival’s website. VIP packages are also available.