ArcTanGent will return 19–22 August 2026 with a stacked run of headliners that includes Primus, Chelsea Wolfe, and a UK-exclusive performance of Mariner by Cult of Luna & Julie Christmas, who will celebrate the album’s 10th anniversary by playing it in full.
The festival—now one of the most distinctive experimental rock and metal events in the UK—also confirms SikTh as Wednesday’s headliner, plus new additions Napalm Death, High On Fire, Conjurer and a UK-exclusive orchestral performance from Jo Quail with The Crossbones Ensemble.
This makes the current line-up so far consist of:
Primus (Friday Headliner) / Chelsea Wolfe (Thursday Headliner) / Cult Of Luna & Julie Christmas performing Mariner (Saturday Headliner) / Igorrr / Napalm Death / SikTh* (Wednesday Headliner) / Perturbator / Chat Pile / High On Fire / Alcest / Oathbreaker / Agent Fresco / Conjurer / TTNG / Svalbard* / BRUIT ≤ / Amplifier (Silent Disco Live Set) / Heck / Alpha Male Tea Party* / Humanfly / Jo Quail & The Crossbones Ensemble / Psychonaut / Lost In Kiev* / Overhead, The Albatross* / Michael Cera Palin / Darkher / Shearling / Town Portal / Barrens / Blessings / Bucket / Chalk Hands* / DIMSCÛA* / Erotic Secrets of Pompeii / Giant Walker* / The Grey* / HAAL / KLÄMP / Meatdripper / No Violet / Sans Froid* / Swamp Coffin* / Tanzana / Zatokrev / Sara Zozaya *= Wednesday only
Headliners
- Primus make their first ATG appearance and first UK return since 2017.
- Chelsea Wolfe finally headlines after her cancelled 2020 slot, following the success of She Reaches Out To She Reaches Out To She.
- Cult of Luna & Julie Christmas perform Mariner in full, their only UK show of 2026.
Johannes (Cult of Luna):
“What I’m really trying to say is simple: I take every chance I get to be on stage with Julie… we’re preparing to bring these songs back to life next summer.”
Julie Christmas:
“This will be an experience, not a performance. Blood, sweat, and tears… light, love, and sound so loud I might shatter. Don’t miss this.”
Festival organiser James Scarlett adds:
“Primus at ArcTanGent is well overdue, Chelsea Wolfe can finally make her appearance after 2020, and Mariner is one of the greatest albums of all time. To have them all in one year is unbelievable.”
Tickets
Grab your tickets: arctangent.co.uk
About ArcTanGent
Held near Bristol, ArcTanGent has built a cult following by focusing on experimental rock, math rock, post-metal, noise and adjacent extremes. It won Best Small Festival at the UK Festival Awards in 2018 and regularly hosts rare UK exclusives, reunions, and one-off sets.
Past performers include Mogwai, Opeth, Meshuggah, Coheed & Cambria, Explosions in the Sky, Converge, Cult of Luna, American Football, Shellac, Deafheaven, The Dillinger Escape Plan, and dozens more.
