ARC Music Festival may have expanded to four days for the first time in 2026, but even more time at Union Park was not enough to contain the party. Once again, ARC After Dark transformed Chicago into an extension of the festival, bringing artists and attendees into clubs and venues across the city long after the festival stages went quiet.
Presented by Mixmag, this year’s ARC After Dark events stretched from Thursday through Monday, surrounding ARC’s historic four-day edition with five nights of additional events. While the sheer amount of music was impressive, what continued to make After Dark special was not simply the opportunity to see more artists, but the chance to see them differently.
Festival sets often come with shorter time slots, massive production, and an expectation to deliver immediate peak-time moments. Inside Chicago’s clubs, many of those restrictions disappeared. Across four nights of After Dark events, artists embraced the freedom to dig deeper, experiment, and stretch their sets well into the early morning. MEDUZA approached an unexpected opening slot like true selectors, Mau P took Radius on a three-plus-hour journey, and Anyma stripped away much of the visual spectacle associated with his performances to focus on a proper afters set. Before any of that, however, ARC weekend began under the Chicago sunset.
Thursday offered two completely different introductions to ARC weekend, beginning outdoors at Castaways with Chicago’s own Azzecca. With temperatures remaining high throughout the day, the waterfront setting provided the perfect backdrop as the afternoon gradually gave way to sunset. Azzecca commanded the crowd throughout her four-hour set, setting an energetic tone without rushing the journey. As daylight faded and Chicago’s skyline began to glow, the atmosphere only continued to build, providing an ideal way to ease into what would become an incredibly long weekend of music.
Later that night, the atmosphere shifted considerably at Serum, where Sara Landry’s HEKATE brought a much heavier soundtrack to one of the weekend’s more intimate settings. Spread across two levels overlooking the dance floor, Serum allowed attendees to stay remarkably close to the action while KYRUH, Hiroko Yamamura, and Nicole Moudaber progressively pushed the room deeper into techno territory. Each set increased the intensity before Sara Landry eventually took control for the night’s closing performance.
Rather than letting the intensity remain at one level, Sara Landry continued building throughout her set, moving through pounding kicks, hypnotic rhythms, and darker selections while keeping the packed dance floor locked in from beginning to end. With attendees surrounding the action across Serum’s two levels, the intimate setting made her performance feel even more immersive as she pushed the energy deeper into the night. The performance was particularly unique because Sara Landry was delivering an afters set before even stepping onto the ARC stage, giving fans an early taste of what was to come at Union Park the following day while showcasing her sound in a much more intimate club environment.
By Friday, ARC was no longer confined to its official festival and After Dark programming. Ahead of her appearance at The Grid, Azzecca hosted a special pop-up DJ set at Pure Green in Fulton Market. The activation included a custom Azzecca -flavored smoothie and limited-edition sleeve designs available exclusively at the location, giving fans another way to interact with the Chicago artist before heading to Union Park. The appearance also arrived ahead of the release of her single ‘Dissolve’ through her COSIMEA imprint.
After a full day at ARC, attention returned to Serum for one of the most intriguing lineups of the weekend: MEDUZA, Korolova, and GENESI. The first surprise came almost immediately, as rather than occupying the headlining or closing position many might have expected, MEDUZA opened the night.
With Mattia Vitale behind the decks, the slot offered a different side of MEDUZA. Instead of treating an early set like a condensed version of a peak-time festival performance, Vitale embraced the responsibility of opening a dance floor. Deeper and groovier selections gradually established the room’s energy, allowing the crowd and music to build naturally rather than forcing the night toward its peak too soon.
It was the type of set that demonstrated an understanding of the role a DJ plays within an entire night, and it became one of the first examples of what made this year’s After Dark programming so compelling. Seeing an artist capable of commanding massive festival stages intentionally pull things back and construct a room from the ground up offered something entirely different.
Korolova followed and delivered one of Friday’s standout performances, building on the foundation MEDUZA had carefully established while taking Serum in a more melodic direction. Her set unfolded as a journey through melodic house and techno, weaving together emotional builds, driving rhythms, and euphoric releases that kept the crowd locked in throughout. Korolova knew when to let the melodies breathe and when to push the energy forward, creating a set that felt cohesive from beginning to end rather than simply moving from one peak-time moment to the next. Inside Serum’s intimate dance floor, those builds and releases felt even more impactful as she gradually took the room somewhere bigger.
GENESI then stepped in for closing duties and shifted the night into another gear. With MEDUZA opening the floor and Korolova taking the crowd through a melodic journey, the Italian producer had the freedom to push into a more energetic late-night sound as the party moved deeper into the early morning. His driving house grooves and heavier selections gave the night the closing punch it needed, keeping Serum moving until the end and completing a lineup where each artist played a distinct role in the progression of the night.
If Friday demonstrated how different an opening set could be, Saturday showed what could happen when a headliner was given the freedom to keep going. After another full day at Union Park, Radius welcomed Obskür, Paco Osuna, and Mau P for a night that became one of the defining ARC After Dark experiences of the weekend.
Obskür and Paco Osuna set the stage before Mau P stepped behind the decks, and anyone expecting a straightforward continuation of his ARC festival performance quickly discovered that he had something different planned. Mau P made it clear that he was approaching the night as a proper afters, and his extended set delivered on that idea. Rather than leaning exclusively on the immediate festival weapons expected from one of dance music’s biggest current names, Mau P went deeper and more experimental. The longer format allowed him to explore different corners of his sound while letting tracks breathe in a way that shorter festival slots rarely permit.
The set stretched well past 4 AM, lasting roughly three hours or more, and Mau P appeared just as invested in the journey as the crowd in front of him. There was no sense that he was simply fulfilling another appearance after already playing ARC, as he embraced the environment and continued digging deeper as the morning approached. Among the memorable moments were ‘Stereo Love’ and Eric Prydz’s remix of ‘Proper Education,’ selections that fit naturally into a set built around unpredictability rather than recreating what attendees had already heard earlier in the weekend.
That distinction is exactly why ARC After Dark remains such an important component of ARC. Seeing the same artist twice does not necessarily mean receiving the same experience twice, and Mau P’s performances offered a perfect example of how a festival set at Union Park could transform into something entirely different once the party moved to Radius.
By Sunday night, four days of nonstop music might have been expected to slow the crowd down, but Radius suggested otherwise. Chris Avantgarde B2B Kevin de Vries took on the responsibility of warming up the massive room ahead of Anyma, and their chemistry made the pairing feel natural from the start. Both artists have become closely associated with the melodic side of modern techno, but their individual styles complemented one another rather than competing for attention.
Together, they steadily raised the energy and prepared Radius for an Anyma performance that would once again demonstrate the difference between an After Dark appearance and a traditional headline show. Anyma has become synonymous with enormous audiovisual productions, where towering digital figures and cinematic imagery often play an integral role in the experience, but at Radius, much of that familiar spectacle was absent.
Without the usual Anyma visual presentation commanding attention, the focus shifted toward the music and the freedom of the late-night environment, giving attendees a chance to experience a different side of his performances. Like Mau P the night before, Anyma approached the night as a proper afters set, experimenting beyond the confines of what audiences might typically expect from one of his larger productions.
The night then delivered one of its biggest surprises when Chris Avantgarde and Kevin de Vries returned to the stage to join Anyma, unexpectedly turning the performance into a B3B. The energy inside Radius immediately climbed as three artists with closely connected but distinct sounds shared the decks, creating a moment that felt less like a meticulously structured festival performance and more like exactly what an afterparty should be: spontaneous, collaborative, and driven by what was happening inside the room.
Even after Anyma finished, the night was not over. Son of Son stepped behind the decks to close things out, with Chris Avantgarde eventually joining him as well. Instead of the energy disappearing after the headliner, the night continued evolving into another collaborative moment that carried ARC’s final Sunday night into the early morning.
ARC After Dark continues to be much more than an opportunity to keep partying once Union Park closes. The series allows the festival to spill into Chicago’s nightlife, offering a different atmosphere where artists have more freedom to experiment, play longer, and embrace the late-night setting.
Even with ARC expanding to four days for the first time in 2026, After Dark remained an essential part of the weekend. Across five nights of events, the series once again showcased why experiencing ARC extends well beyond the festival grounds and into the city that gave birth to house music.
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