By the time eonmusic has traversed the scenic ride along the coast with a view of the international bridge to Sweden and checked in, Cory Taylor has hit the main Helviti stage. Whipping up the crowd into an early afternoon frenzy, the first nu metal godfather of the weekend - there'll be another later - mixes up the set with tracks from his solo releases, as well as with favourites from Stone Sour and Slipknot.
Igniting the pit for 'We Are the Rest', and 'Song #3', the charismatic front man proves a winner with the capacity Copenhell crowd.
Touching on his mental health and bringing things down a little, Taylor pays tribute to his wife, confessing that "six months ago she saved me from the darkest time in my life", ahead of a emotive 'Through Glass'.
Bringing things back to the rough stuff, and it is of course the Slipknot material that elicits the biggest response, with both 'Snuff' and 'Duality' lifting the energy in the arena to another level.
Over on the Hades stage, the command; "scream for me Copenhagen!" can only mean one thing; the return of Bruce Dickinson to Denmark for his first solo show in 26 years. Bruce and his band are well bedded-in after spending the last three months, on and off, on tour. Taking in all the best bits of his solo catalogue from the opening 'Accident of Birth' to an out of this world 'Abduction', and monstrous 'Book of Thel', it's a stunning performance.
With Avenged Sevenfold headlining the main stage with career-spanning set that takes in all their biggest moments including a storming 'Hail to the King', it's left to the irreverent Steel Panther to close out day one as only they can. "We're back at Copenhell and we've talked to the owner of the festival and we've locked the doors and we're going to play to six in the morning!", declares singer Mike Starr to the misguided delight of everyone.
With their comedy schtick reaching new levels of ridiculousness, guitarist Satchel thanks his; "brand new guitar tech, Noodles from The Offspring", who appears from the wings to help him out with his gear. "He just got fired from The Offspring", jokes Satchel, congratulating him on his new job.
It's not all joking however, and later there's a brief moment of sincerity at the end of '1987', with Starr declaring "we miss you Eddie Van Halen!"
However Ian is here for one primary reason, and when Mr.Bungle take to the stage in their early afternoon slot for their first Danish show in 24 years, it's without sentiment. Entering to the most painful and out of tune reworking of the theme tune to 2001: A Space Odyssey, the mere sight of Mike Patton alone - braided hair dangling above his head, bright red lipstick, and hand drawn 'tattoos' - the word 'NECK' on his neck, 'Dick Power' on his arm - is enough to unnerve even the hardiest metallers in the place.
Pummelling the crowd with opener 'Grizzly Adams' and the brutal 'Anarchy Up Your Anus', their teasing tender covers including utterly convincing runs through Spandau Ballet's 'True' and Grease classic 'Hopelessly Devoted to You' proved that you just never know what you're going to get with Mr.Bungle.
Wrapping up their set as they did at the previous week's Download Festival , a genteel 'All By Myself' is reworded to 'Go Fuck Yourself', with predictably hilarious results.
However it's about more than just the music today, and on the day that Denmark take on England in the UEFA European Championship, the Beirgarten tent with its big screen is rammed to capacity. When Denmark equalise in the 34th minute, there's an eruption of elation, and whether you're a fan of the beautiful game or not, it's a sight to behold.
Back to the music, and it's divisive nu metal godfathers Limp Bizkit who close out the main stage. Having traversed Europe from Belfast to Donington park in the last week and a bit, their arrival in Copenhagen draws one of the biggest crowds of the festival. "Are you ok if we get a little bit heavy on ya'll?", enquires a knowing Fred Durst as his band take to the stage. With a wave of bouncing erupting to opener 'Full Nelson', things barely let up, as anthem 'Rollin' gives way to a defiant 'My Generation' and beyond.
With DJ Lethal interjecting with snippets from Ozzy, Creedence Clearwater Revival, Pantera, George Michael, it feels more like a house party than a gig.
A surprise and earnest cover of Nirvana's 'Come As You Are' meanwhile proves a festival highlight.
While critically acclaimed Danish hyper thrashers Terminalist shattering the serenity in the idyllic forest hideaway on the Gehenna stage, Kerry King is chatting in Copenhell Con about his favourite horror movies. "I was a very sheltered teenager", he admits, before going on to discuss and rate some of the goriest flicks of all time. An engaging and entertaining interview, the most revealing moment comes when he says that he had seriously considered naming his solo band Krug after his character in the movie Studio 666,
With Ireland's The Scratch going down a storm on the Pandemonium stage, not least when they drop in a snippet of Thin Lizzy's 'Emerald', over on the Hades stage, Biohazard's Brooklyn hardcore gives way to Kerry King, who's performing his first Danish solo band show. Kicking off with the Slayer in all but name of 'Where I Reign', his new outfit are as tight as his former band, with star player's - and former Slayer colleagues - Paul Bostaph on drums and guitarist Phil Demmel putting in commanding performances. With a big production featuring elaborate lighting and staging as well as pyro, and tunes from his back catalogue including a punishing 'Disciple' and a menacing 'Reign in Blood', King proved that he's ready for life away from his former band.
Back on the main stage, Rival Sons classic rock revival gives way to Machine Head, who mean business. "Copenhell, are you ready to lose your minds with Machine Head tonight?", asks main man Robb Flynn, as the biggest circle pit of the festival erupts for 'Ten Tonne Hammer'. With ten tonnes of pyro accompanying their set, it's a visual treat right through to the rousing finale of 'Davidian' and 'Halo'.
With the metalcore of Danes Siamese soundtracking the early afternoon on the main stage, German veterans Accept, may be fifteen minutes late for their slot, but put on one of the most well received sets of the day. Now boasting a three-guitar attack featuring former Whitesnake man Joel Hoekstra, guitarist Wolf Hoffman later tells eonmusic; "Joel is an amazing player. We've played with three guitar players for a while now. It's one of those crazy stories. It was by accident. We never really planned on this, but on the orchestra tour, we found out how great it is to play with three guitar players . It really adds a little dimension to it. Do we need three guitar players? Hell no, but is it better? Yes! We have a lot more fun, and that's why we wanted to keep that. We found Joel to take on the summer festival run, and he's a total professional, a killer player, and a really nice guy."
Mixing up classics like 'There Goes the Neighbourhood' and 'Voodoo' with newies from their forthcoming 'Merciless' album, its a vintage Body Count set. Debuting violent new track 'The Purge', Ice-T declares; "attention; the purge has now begun. Stay out of the mosh pit if you want to live tonight."
It's a family affair too, with Ice's wife watching side stage, his son Little Ice part of the band, and his eight-year-old daughter even joining in for an epic 'Talk Shit, Get Shot'.
And with that, four days is done. With a capacity of 35,000, it's a stretch to call Copenhell metal's best kept secret, but it is undoubtedly a hidden gem. With myriad bars, food stalls, toilets and a huge embankment from which to view the main stages, it's exceptionally well facilitated, and doesn't suffer from the usual complaints levelled at a lot of other events of this size. Put simply, the Danes do it right in Denmark.
Copenhell returns in 2025. for more information visit copenhell.dk.
Check out our gallery from the weekend. All photos by Adrian Hextall.