HALLOWMASS 2026 — MAYAT ŌM: BRIEF CREATURES. October 30 + October 31, 2026. Summit Denver, 1902 Blake Street, Denver, Colorado. All Ages. Hallowmass returns to Summit Denver for two all-ages nights on October 30 and October 31. This year's featured movement, Mayat Ōm: Brief Creatures, turns toward grief, remembrance, and the improbable fact of existence itself. Hallowmass combines itchy-O's large-scale musical and performative force with a participatory ceremonial environment of memory, offering, collective witness, celebration, and the unknown. Participation is invitational. Guests may approach, witness, offer, or decline. No particular belief or emotional response is required.
Organizer
THEE ITCHY-OVenue
Summit Denver
Category
Performance ArtTag
ImmersiveStart date
October 30th, 2026
End date
October 31st, 2026
Audience Role
Participation is invitational — guests may approach, witness, offer, or decline as part of the ceremonial environment.
Ages: All ages
Content Advisories
Interaction Advisories
Mobility Advisories
6
Events
4
Years on EI
About THEE ITCHY-O
Since 2009, this Colorado-based meta-mystical ensemble has been thrilling audiences across the U.S. and beyond. A battery of fourteen-plus power percussionists comprises the spine of the fifty-plus strong performance troupe whose orchestral arsenal of avant-instrumentation runs the gamut from guitars, gamelan, and synths to less conventional instruments including theremin and vocoders in concert with more experimental trance-inducing appurtenances. Itchy-O dismantles assumptions of traditional performance models to break down the barriers between audience and experience, administering a blast of ceremonial chaos; baptizing the audience—body, mind, and collective soul—in a spectacular, pan-sensorial sea of music, mystery, and transcendental spiritual spectacle. Itchy-O proudly served as a centerpiece at MONA’s world-renowned Dark MOFO fest in Tasmania in 2016 and is ecstatic to be invited back to perform, again in 2023. They have performed on stage with David Byrne & St. Vincent. JG Thirwell and Dan Deacon have opened for itchy-O and they have warmed up audiences for numerous legendary artists including DEVO, Beats Antique, Iggy Pop, Bad Religion, and Public Enemy. They have performed countless private engagements, including a legendary performance for Maynard Keenan’s Merkin Vineyards in 2019. Jello Biafra’s iconic underground record label, Alternative Tentacles has released three of their groundbreaking studio albums. Itchy-O is also committed to providing spontaneous free public performances in the spirit of upending the mundane and delivering mesmerizing art to the streets by providing impromptu musical encounters in non-traditional settings; delighting unsuspecting audiences with surprise ontological assaults on ordinary reality. www.itchyo.com