Everyone Orchestra, the rotating improvised music collective conducted by Matt Butler, has announced two shows at Cervantes Masterpiece Ballroom in Denver, Colo. on Jan. 24 and 25.

The Jan. 24 show is billed as “Everyone’s Dead: A Night of Grateful Dead,” and the guest musicians will be Keith Moseley (String Cheese Incident), Aron Magner (The Disco Biscuits), Jeremy Schon (Pigeons Playing Ping Pong), Ross James (Terrapin Family Band), Corey Frye (The Main Squeeze) and Vince Herman (Leftover Salmon). The show will also feature support from Flower In The Sun: A Tribute to Janis Joplin.

Jan. 25’s show is a classic all-improvised night of music from Everyone Orchestra. The lineup again features Moseley, Magner, Schon and Frye, but also adds Stephen Perkins (Jane’s Addiction), Ross James (Terrapin Family Band), Bevin Foley (Trout Steak Revival), Carrie McCune (Mama Magnolia), Alex Cazet (Mama Magnolia) and Leah Concialdi (Tnertle/Atomga).

Tickets to both shows are available now, and for more information, visit everyoneorchestra.com.