Get ready for Psycho California, the festival formerly known as Psycho de Mayo. Organizers have announced the first wave of bands for the three-day music weekend, with Kylesa, Crowbar, Eyehategod, Orange Goblin, Earth, OM and Russian Circles among the acts revealed for the 2015 event.

Others set to rock The Observatory in Santa Ana, Calif., May 15-17 include Bedemon, Conan, Indian, Earthless, Pallbearer, Stoned Jesus, Old Man Gloom, Cave In, Acid Witch, Truckfighters, Tombs, Bang, Electric Citizen, Coffinworm, SubRosa, Eagle Twin, Mammatus, True Widow, Anciients, Bellwitch, Lord Dying, Death By Stereo, Radio Moscow, Ancient Altar, Samsara Blues Experiment, Elder, Mothership, The Well, Deathkings, Wo Fat, Rozamov, Destroyer of Light, Highlands, Bloodmoon, Slow Season, Crypt Trip, Lords of Beacon House, Tumbleweed Dealer, Sinister Haze, Blackout, Red Wizard, Banquet and Loom.

While that lineup may seem impressive, it will get even better on Jan. 15 when festival organizers reveal three headliners for the event.

"This is the first show that we're announcing for 2015 and it couldn't be more appropriate," says Kylesa's Laura Pleasants. "We feel that we will be among family in such an environment of heavy riffs, trippy meanderings and good vibes. What a great way to kick it in California again! Come head bang, talk music and get lost in the music with us."

For ticketing details and VIP packages, be sure to check out the Psycho California festival site here.