High Sierra Music Festival will return to Quincy, CA, for its 28th annual iteration next month, and the festival’s organizers have revealed more information about this year’s festivities, revealing the lineup for the Artist Playshops, the late-night Troubadour Sessions and a few artists-at-large who will be roaming the festival looking for collaborative opportunities.

As the festival noted via JamBase, one of the surprises of this year’s Playshops will be the “Surprise! It’s A Surprise Surprise Me Mr. Davis Playshop,” which will bring together The Slip (Brad and Andrew Barr of the Barr Brothers and Marc Friedman) and Nathan Moore for a throwback to their Surprise Me Mr. Davis days (the band also featured Marco Benevento and hasn’t played a show together since High Sierra 2015.)

Other Playshops slated for this year’s High Sierra are The California Honeydrops’ “Drinking From the Well with The California Honeydrops”; “Give the Drummer Some: A Retrospective of ’70s Funk Drummer” featuring The Motet’s Dave Watts and Turkuaz’s Michelangelo Carruba; Dan Lebowitz’s “Lebo’s High Sierra Ramble: 50 in the Rearview—Songs from 1968” with ALO’s Steve Adams, members of Fruition, Cris Jacobs, Ezra Lipp and Scott Pemberton; “Classic Album Hour: Little Feat’s Waiting For Columbus“ featuring Simon Kurth and Mescalito, plus Lebowitz, Lipp, Jacobs, Holly Bowling and more; The Grateful Bluegrass Boys’ “High Sierra Bluegrass Pick” including a full performance of the Grateful Dead’s Workingman’s Dead; and Tea Leaf Green’s Eric DiBerardino leading a “Guitarmageddon” tribute to Tom Petty. More Playshops will be announced in the coming weeks.

High Sierra’s Troubadour sessions will feature intimate performances from Jacobs, John Craigie, Kattia Racine and the Honeydrops’ Lech Wierzynski on Thursday; Lebowitz, Steve Poltz, Grateful Bluegrass Boy Aaron Redner and Family Crest’s Liam McCormick on Friday; Moore, Brad Barr, and Birds of Chicago’s J.T. Nero and Allison Russell on Saturday; and Nat Keefe, Lipp and Bo Carper on Sunday.

Five artists-at-large have also been announced, including Moore, Lebowitz, Trey Anastasio Band’s Jennifer Hartswick and Natalie Cressman, and saxophonist Skerik.

High Sierra is set for July 5-8 in Quincy, CA, with music from The String Cheese Incident, Sturgill Simpson, Grace Potter, Chris Robinson Brotherhood, Lettuce, The Wood Brothers, Foundation of Funk, Lotus, The Floozies, Turkuaz, Margo Price, The Motet, Pigeons Playing Ping Pong, Twiddle, Spafford and many more. All festival information can be found here.