ArcTanGent Festival (also known as ATG) is a three-day British rock festival held annually since 2013. The festival specialises in experimental rock, metal, prog, math rock, post rock, post-metal, hardcore, and electronic music. It was hosted at Fernhill Farm near Bristol, Somerset until 2026, moving to Todenham Manor Farm in Gloucestershire for 2027 onwards. The festival is named after the Earthtone9 album arc'tan'gent (2000).

Previous performers include Primus, Chelsea Wolfe, Heilung, Mogwai, Meshuggah, Devin Townsend, Explosions in the Sky, Coheed & Cambria, Opeth, Glassjaw, Godspeed You! Black Emperor, Sleep Token, Polyphia, Converge, Karnivool, Animals As Leaders, Shellac, American Football, TesseracT, The Dillinger Escape Plan, Russian Circles, Wardruna, Electric Wizard, Carpenter Brut, Igorrr, Alcest, Cult of Luna, Battles, Public Service Broadcasting, Empire State Bastard, Deafheaven, And So I Watch You from Afar, 65daysofstatic and Fuck Buttons.

The festival features four stages, silent disco after the live performances have finished, a selection of bars and food vendors, and weekend camping and VIP options.ArcTanGent Info

2013

The 2013 edition of the festival was the first to be held. It has since returned annually, albeit now one week earlier each year.

The Yohkai stage was curated by Damnation Festival on the Friday.

Thursday 29 August YohkaiMaybeshewill Amplifier Talons Pohl Falling Stacks Flights Memory of Elephants

Friday 30 August Arc Yohkai Bixler PX365daysofstatic Future of the Left Rolo Tomassi Maybeshewill Zun Zun Egui Yndi Halda Thought Forms BLKSTRS Baby Godzilla The NaturalsEarthtone9 Dragged into Sunlight Bossk Devil Sold His Soul Winterfylleth Humanfly Manatees AstrohengePublic Service Broadcasting Brontide That Fucking Tank The Physics House Band You Slut! Anthroprophh / Big Naturals Spectres Poly-MathDamien Schneider RiceBeats Fairhorns Charlie Barnes Deej Dharwal SJ Esau Vostok Joe Garcia

Saturday 31 August Arc Yohkai Bixler PX3Fuck Buttons And So I Watch You from Afar Three Trapped Tigers Islet TTNG Vessels The Pirate Ship Quintet Delta Sleep AntaBo Ningen Tall Ships Johnny Foreigner Among Brothers The St Pierre Snake Invasion Axes Scarlet Racal & The TrainwreckTurbowolf Arcane Roots Nordic Giants Castrovalva Fat Goth Cleft Hysterical Injury Oliver WildeNon Classical DJs Tom Beef (+The Mother Beef) Howard James Kenny Giant Swan The Dagger Brothers Oxygen Thief Theo

2014

The PX3 stage was relocated from the campsite to the main arena for the 2014 edition and every year since.

Thursday 28 August YohkaiAnd So I Watch You from Afar Three Trapped Tigers TTNG The Physics House Band Baby Godzilla Nordic Giants The St Pierre Snake Invasion Theo

Friday 29 August Arc Yohkai Bixler PX3Russian Circles This Will Destroy You Crippled Black Phoenix EF Human Pyramids Diagonal Rumour Cubes Monsters Build Mean Robots Alpha Male Tea PartyMaybeshewill Tera Melos Enemies Purson Bats Lost in the Riots We Are Knuckle Dragger Suffer Like G DidTellison El Ten Eleven 100 Onces Memory of Elephants Olympians Big Joan Flies Are Spies from HellCleft Charlie Barnes Iran Iran Sleep Beggar Super Squarecloud Howard James Kenny

Saturday 30 August Arc Yohkai Bixler PX3Mono God Is an Astronaut Tall Ships Jamie Lenman Mutiny on the Bounty Blueneck Goonies Never Say Die Luo The Winchester ClubLite Year of No Light Mylets Fen Hark Alarmist Charlie Barnes AstrohengeI Like Trains Tangled Hair Gunning for Tamar AK/DK Codes in the Clouds No Spill Blood Adding Machines SamoansShiver The Broken Oak Duet Bear Makes Ninja Karhide Waking Aida Wicket

2015

Where the 2013–14 editions were held on the last weekend in August, the 2015 edition moved a week earlier in August where it has remained since.

The 2015 edition was the first time the PX3 stage hosted performances on all three days of the festival, with the Thursday PX3 program curated by BBC Introducing. This edition of the festival also included a Sargent House takeover, with several of their artists performing including Deafheaven, Emma Ruth Rundle, Marriages, Helms Alee and Mylets.

Cult of Luna were originally scheduled to perform on the Arc stage before Deafheaven, however they instead headlined the Yohkai stage after flight delays.

Thursday 20 August Yohkai65daysofstatic Lite Mutiny on the Bounty Mylets AK/DK Cleft Alpha Male Tea Party

Friday 21 August Arc Yohkai Bixler PX3The Dillinger Escape Plan The Fall of Troy Maybeshewill Joan of Arc That Fucking Tank Body Hound Trojan Horse Tacoma Narrows Bridge DisasterVennart Chon Rolo Tomassi Her Name Is Calla 11Paranoias The Fierce and the Dead QuadrupedeBlanck Mass Helms Alee Delta Sleep PSOTY Valerian Swing We Never Learned to Live CousinEmma Ruth Rundle Patchwork Natives Sonance Obe Ohhms Pocket Apocalypse Downard Juffage

Saturday 22 August Arc Yohkai Bixler PX3Deafheaven Deerhoof pg.lost Talons Axes Black Peaks 100 OncesCult of Luna Marriages British Theatre Young Legionnaire Prosperina Latitudes USA NailsToundra The Algorithm Tangled Hair Lone Wolf Gum Takes Tooth Flood of Red Poly-MathVessels Alright the Captain Vasa IEPI Vodun Crows an Wra Lambhorn Eschar Steve Strong

2016

The Bixler stage was relocated from the campsite to the main arena for the 2016 edition and every year since. All four stages are now situated in the main arena.

Cleft performed their final ever show at the 2016 edition of the festival. The set was recorded and the movie posthumously screened across seven UK shows in December 2018 as part of One More Tour: In Memory of Dan Wild-Beesley.

Thursday 18 August Yohkai PX3Mono Three Trapped Tigers TTNG Rolo Tomassi Talons Memory of Elephants Body HoundAxes Quadrupede Delta Sleep Alarmist Samoans Poly-Math Anta

Friday 19 August Arc Yohkai Bixler PX3Godspeed You! Black Emperor toe La Dispute Arcane Roots MNHM VasudevaNordic Giants Animals as Leaders Agent Fresco Knifeworld Tiny Fingers Intervals Viva BelgradoMonuments Cleft Heck Gulfer Fall of Messiah The Brackish Sleep KitPlini Svalbard Falls A Werewolf! Floral Eugene Quell Adam Betts Super Goliath

Saturday 20 August Arc Yohkai Bixler PX3American Football And So I Watch You from Afar Caspian mewithoutYou Errors Raketkanon Exassens Lets Talk DaggersMeet Me in St. Louis Yndi Halda Mutoid Man Black Peaks Totorro Dialects EnvoysGallops Enemies ZEUS! Owen Town Portal VLMV Bearded Youth QuestFoes Weddings Landscapes Cheap Jazz Classically Handsome Brutes Space Blood Kusanagi Chiyoda Ku Skyhitch

2017

Thursday 17 August Yohkai PX3Russian Circles Future of the Left Tall Ships Totorro Gallops Town Portal Bearded Youth QuestNordic Giants Heck Vasudeva USA Nails Fall of Messiah Chiyoda Ku Waking Aida

Friday 18 August Arc Yohkai Bixler PX3Converge God Is an Astronaut TTNG Listener Stearica Alpha Male Tea Party Hikes Right Hand Left HandLeprous The Number Twelve Looks Like You Bossk Thought Forms Wot Gorilla? Hemelbestormer You Break, You Buy Gilmore TrailHo99o9 The Evil Usses Hark Ohhms Living Body ItoldyouIwouldeatyou Madilanworriedaboutsatan Vola Frontierer A-Tota-So Nitkowski Lice Britney Hoggs Bison

Saturday 19 August Arc Yohkai Bixler PX3Explosions in the Sky TesseracT Boris sleepmakeswaves The Physics House Band Spectres Toska HCBPSikTh tricot Devil Sold His Soul Lost in Kiev Jardín de la Croix Future Horizons Boss KeloidJambinai Defeater Brutus Gug Pijn He Was Eaten By Owls Real TermsThe St Pierre Snake Invasion Employed to Serve Landscapes Shitwife Death Pedals Halo Tora Irk Poisonous Birds

2018

The 2018 event was the first year in which the Arc stage featured bands performing on all three days.

The Thursday Yohkai and PX3 lineups were curated in part by Big Scary Monsters vs Holy Roar respectively.

Gallops were the first band to play a live set as part of the silent disco, performing fully electric on the Thursday night.

Chiyoda Ku replaced Mugstar on the Yohkai stage. Jo Quail joined Takaakira 'Taka' Goto for the Behind The Shadow Drops performance.

The festival marked Giraffes? Giraffes! first ever performance outside of North America since their formation in 2001.

Thursday 16 August Arc Yohkai PX3And So I Watch You from Afar Pianos Become the Teeth Foxing People Like Milk ProductsLa Dispute Jamie Lenman Rolo Tomassi Delta Sleep Ohhms Alpha Male Tea Party Boss KeloidTangled Hair Bossk Pijn & Conjurer Svalbard Gulfer Body Hound Cassels

Friday 17 August Arc Yohkai Bixler PX3Glassjaw Anathema Pelican Vennart Talons Poly-Math Space Blood Seven Colour DriveLeprous Zeal & Ardor Tides from Nebula Chiyoda Ku Astralia Orchards BlanketTides of Man Strobes Halo Tora Conjurer Bearfoot Beware God Mother Modern RitualsBehind the Shadow Drops Blueneck Black Futures Jo Quail Mr Marcaille Wren Codices Natalie Evans

Saturday 18 August Arc Yohkai Bixler PX3Shellac of North America Alcest Myrkur Giraffes? Giraffes! Plini Jean Jean Hey Colossus Trigger ThumbArcane Roots Mouse on the Keys Black Peaks Telepathy Bad Sign La Jungle Only Echoes RemainPigs Pigs Pigs Pigs Pigs Pigs Pigs Part Chimp Gug Arcane Roots (Electronic) Vasquez Ilenkus Death and the PenguinScalping Toska The Guru Guru Coldbones Møl VLMV Sœur The Big Massive Orchestra

2019

On 6 September 2018 Meshuggah was announced as the first headliner.Louder Sound

The 2019 event featured an expanded site footprint and an additional campsite, albeit the layout remained largely unchanged. There was also the introduction of the Bar Stage, located in the centre of the site.

Friday night once again featured live sets as part of the silent disco, including The Algorithm and GosT. There were also silent disco sets from John Stanier and Effigy across the weekend.

The main stage was opened by The Beft; a Tribute to Dan Wild-Beesley of Cleft and featured guest musicians including Mike Vennart. Black Peaks set featured Jamie Lenman on vocals due to the absence of the band's singer Will Gardner. And So I Watch You From Afar performed their debut album in full for an unannounced special guest slot on the Arc stage.

Thursday 15 August Arc Yohkai Bixler PX3 Bar RoomCoheed & Cambria Carpenter Brut Zeal & Ardor Nordic Giants Bossk The BeftDaughters Polyphia Covet Pigs Pigs Pigs Pigs Pigs Pigs Pigs Cocaine Piss FloralAK/DK Raketkanon Møl Bats Mammoth Weed Wizard Bastard CultdreamsMemory of Elephants Pijn Lost in the Riots Conjurer Yvette Young Ithaca Big LadSleep Beggar Theo Kuro Pave Haunt the Woods

Friday 16 August Arc Yohkai Bixler PX3 Bar RoomBattles Russian Circles 65daysofstatic The Ocean Thank You Scientist Standards Good Game A. A. WilliamsTTNG Black Peaks Toska The Algorithm Puerto Austral Slow Crush We Never Learned To LiveFrontierer Zu Sleep Token Birds In Row All The Best Tapes Dags! CLT DRPBrutus Colossal Squid Palm Reader Sithu Aye Too Piste Rad Pitt Cattle HexcutSteve Strong Sœur No Violet Charlie Barnes VLMV Seven Colour Drive Øgïvęš

Saturday 17 August Arc Yohkai Bixler PX3 Bar RoomMeshuggah Cult of Luna And So I Watch You From Afar Three Trapped Tigers The Physics House Band Matt Calvert The St Pierre Snake Invasion DJ PerroCaspian Gnod The Contortionist Invalids Curse These Metal Hands Kaguu Wild Cat StrikeEmployed to Serve Car Bomb Elephant Gym Azusa Aiming For Enrike Gender Roles Øgïvęš Big BandDoblecapa Voronoi Letters From The Colony Puppy LLNN AMNT Midas Fall Sugar HorseKinlaw + Franco Franco a-tota-so Oxygen Thief Howard James Kenny Twin Siblings Qarlaq Torsten Jensen

2020–21 cancellations due to COVID-19

On 5 May 2020, ArcTanGent was cancelled due to the COVID-19 pandemic. On 21 May 2021, ArcTanGent was cancelled again due to the COVID-19 pandemic, citing the lack of a government insurance scheme to cover COVID-19-related cancellations of music festivals (especially due to increasing spread of Lineage B.1.617 in the UK amid its lifting of restrictions).

2022