The lineup: John Butler Trio ; OK Go; American Authors ; Frenship; Barns Courtney ; Coleman Hell; Missio ; Coast Modern; LOLO ; Hollow Wood; The Blue Stones ; The Sweeplings; Kuinka ; Iska Dhaaf; The Dip ; Dude York; Naked Giants ; Porter Ray; THE FAME RIOT ; The Chicarones; The Grizzled Mighty ; Lemolo; Marshall McLean ; Night Argent; Xperience(XP) ; Lavoy; Runaway Symphony ; Jango; Vaudeville Etiquette ; Genders; Folkinception ; Mama Doll; T.S the Solution ; Joyfield; Fauna Shade ; Jus Wright; Zack Quintana ; Marsalis; Ravenna Woods ; Hey! Is for Horses; Lou Era ; Modern Sons; Elephant Gun Riot ; Bread & Butter; Boat Race Weekend ; Andy Rumsey; Dawn of Life ; Deschamp; Erin Parkes

Spokane’s newest music festival, Tinnabulation, announced its lineup on Thursday, and it’s a doozy.

The three-day festival Sept. 8-10 will feature headliners OK Go, American Authors and the John Butler Trio. The rest of the bill features local luminaries such as Marshall McLean, Mama Doll, Lavoy, Hey! Is for Horses, Elephant Gun Riot, T.S. the Solution, Folkinception and the Sweeplings. Regional acts include Seattle’s Porter Ray, Ravenna Woods and Naked Giants.

Then there’s the LA indie pop duo Frenship, English singer-songwriter Barns Courtney, the Austin alternative/electronic duo Missio, and Canadian singer-songwriter Coleman Hell.

But it’s the headliners who really stand out. The John Butler Trio, who was last here in 2013 to headline a night at the Festival at Sandpoint, is a long-running Australian roots and jam band that has toured with the Dave Matthews Band and John Meyer, and performed at Coachella and Bonnaroo. They’ve won six Australian Recording Industry Association Awards, the Aussie version of the Grammy Awards.

OK Go jogged the treadmill into pop stardom with the hit “Here It Goes Again,” and the viral, Grammy-winning video that accompanied it. They continued that trend with “This Too Shall Pass,” the video which featured a single shot and an elaborate Rube Golderg machine. Over four albums, the Chicago-born alternative pop rock quartet has thrilled fans across the world, and on television, appearing on everything from the childrens’ shows “Sesame Street” and “Yo Gabba Gabba” to “The Today Show” and “The Tonight Show with Conan O’Brien.” The band was last in our neck of the woods in 2010 for a gig at Sasquatch.

American Authors, the alt-pop rock quartet from New York City by way of Boston, has played SXSW, Lollapalooza, Reading, and Bottle Rocket. Just two albums into their career, the band has scored big hits with “Best Day of My Life,” “Believer” and “Go Big or Go Home.” They were last here in 2014 for a show at the Knitting Factory.

Festival organizer Matt Meyer said the lineup isn’t fully set yet, either. They plan to announce another 10 acts in mid-June. Five of those, he said, will be national touring acts. Stay tuned …