Other new names on the lineup include grindcore duo Clown Core, Norwegian proggers Leprous, and French psych-rockers Slift. Also announced were Arab Strap, Emma Ruth Rundle, Kalandra, Mew and Green Lung – the last two bands marked as UK festival exclusives.

This new crop of artists will join a bill that features Karnivool as Friday nights headliners, Melvins, Rolo Tomassi, Kylesa, Adebisi Shank, Fall Of Troy and Between The Buried and Me. The festival will take place from August 13 – 16 in at Fernhill Farm in Bristol, with tickets on sale now.

In a press release, James Monteith, guitarist of Tesseract said: “We’re beyond excited to headline the Saturday at Arctangent 2025! The lineup once again boasts some of the most innovative and forward-thinking alternative bands around, and we’re truly honoured to close out the festival. This show will also mark the conclusion of our two-year tour in support of ‘War of Being‘, so we’re planning a very special performance to celebrate this milestone.”

An important part of the “Djent” movement within progressive metal, Tesseract released their fifth studio album, ‘War of Being’ in 2023 to positive reviews, with critics hailing it as their strongest work to date.

On January 10 this year they treated fans with a Tour Edition of their latest album, to coincide with their ‘War of Being Part 2 Tour’ coming in February. This updated version adds three bonus tracks recorded live from their headline set at Radar Festival 2024, featuring Kat Marsh of Choir Noir.

Fellow headliners Wardruna dropped their sixth studio album, ‘Birna’, recently on January 25. Reviewers appreciated its instrumentation and earthly themes, with Silent Radio commenting: “This album does not only transport you to a forest, but it will also leave you in a trance. One which you would not want to get out of.”

Festival organiser and booker James Scarlett expressed his excitement for the 2025 lineup additions: “To have Wardruna, a Main Stage headliner, closing off the Wednesday night of ArcTanGent 2025 truly cements this as our biggest year yet.

“If you can make it to ATG a day early, a 4-Day ticket is now a no brainer. Not to mention Tesseract headlining Saturday night alongside the new additions of Clown Core, Mew, Arab Strap, Envy, Green Lung and tonnes more across the whole weekend. You’re not going to want to miss a second of this weekend – FOMO is an understatement.”

Arctangent has become a crucial festival for platforming post, math, metal and various other progressive rock artists. With a capacity of around 10,000, It’s maintained its charm as a smaller, intimate event, where both upcoming acts and more renowned names are celebrated for their experimental music. Last year, the festival organisers fulfilled a longstanding wish of theirs, featuring Scottish post-rock titans Mogwai as a headliner for Arctangent’s 10^th anniversary.

James Scarlett told MusicRadar: “Doing this without any corporate backing is tough but we’ve got there, and it makes me very proud to sit back and think about all the wonderful times we’ve had. Roll on year 20!”

The Arctangent 2025 lineup and other details can be viewed on the festival’s official website here.

UPDATE 27/3/2025: Arctangent Festival has just announced their final festival headliner for their next event – Godspeed, You! Black Emperor will be performing a European exclusive set on the main stage, returning to Arctangent after a nine year gap. Also newly announced on the bill are Chicago math rockers Snooze, who will be joining the stacked lineup for this year’s edition.

Other acts to be recently confirmed include: Maybeshewill, Frontierer, Mclusky, God Is An Astronaut (as a UK exclusive show), The Callous Daoboys (as a UK exclusive festival show), who all add to the already exciting and eclectic metal lineup.

Set to take place between August 13-16, ArcTanGent Festival welcomes an award-winning service with incredibly phenomenal bands and a chilled ambience on the idyllic Fernhill Farm, near Bristol.

ANNOUNCEMENT. The first wave of bands for ArcTanGent 2025 is here.

We’re extremely proud to announce our Friday main stage headliner will be @karnivool! Hailing from Austrailia, this will be a UK exclusive.

Day + Evening tickets on sale now: https://t.co/Fp9nH3dNZ9 pic.twitter.com/i8482dsdQQ

— ArcTanGent (@ATGFestival) October 1, 2024

As the up-and-coming rock festival of the UK, ArcTanGent Festival have constructed a reputation for their exciting, exclusive and eclectic line ups. So much so, following the success of its tenth festival, ArcTanGent Festival was once again shortlisted at the Festival Awards, an incredible achievement after their win of Best Small Festival in 2018.

Next year’s main stage headliner is the remarkable progressive metal band, Karnivool, who will be coming from Australia to make their ArcTanGent festival debut. Their appearance in the UK will see them perform an exclusive show alongside their appearance at the festival.

Karnivool released their most recent studio album Asymmetry back in 2013, the band’s highly anticipated new music is set to be well on the way, perhaps making an appearance at their ArcTanGent Festival set. The exclusivity of Karnivool’s appearance makes the announcement of their headline set a legendary and memorable moment for ArcTanGent Festival.

Upon their upcoming appearance at ArcTanGent next year, Karnivool emphasised: “How good is music? It thrills us from our collective hearts, excited to be circling the round round globe just to play this one show with some amazing acts and friends, ArcTanGent see you there! How good is music?”

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Accompanying Karnivool, ArcTanGent Festival will welcome the appearance of Melvins, whose performance with be an UK festival exclusive, alongside one of the UK’s most legendary heavy bands Rolo Tomassi, psychedelic rock infused metal band Kylesa and the masters of metal, Scottish five-piece DVNE.

Rolo Tomassi commented on their appearance at next year’s ArcTanGent Festival stating: “When it came to deciding how to best celebrate our twentieth anniversary there was only one thing we had in mind. We’re delighted to be returning to ArcTanGent and look forward to putting together a special show for this incredibly special festival.”

James Scarlett, the ArcTanGent organiser has announced: “We go again! We’ve already got some huge reunions in the form of Kylesa, Adebiski Shank and Vessels, plus some legendary albums in full from The Fall Of Troy, We Lost The Sea and Between The Buried And Me. We’re also delighted to welcome Melvins and our Friday headliners, Karnivool, to their first ever ATG. We’re starting as we mean to go on – ArcTanGent 2025 is going to be ridiculous!”

Something is coming. pic.twitter.com/mlHfyKNFqJ — ArcTanGent (@ATGFestival) September 27, 2024

ArcTanGent Festival continue to prove their presence in providing exceptional and exclusive sets from world-class acts from all over the world and at different stages of their careers. The anticipation built from the festivals appearance year after year allows ArcTanGent Festival to be fully independent due to the organic growth in popularity it witnesses.

The lineup for ArcTanGent Festival 2025 highlights the exclusive and legendary nature of the festival, it is certainly an event you will not want to miss.

Tickets can be purchased here.