Charli xcx reached back to 2014 at Los Angeles’ Kia Forum, bringing out Chappell Roan for a performance of “Boom Clap.” The moment stood out precisely because it was a look backward: Charli’s current arena run is built around her newest album, Music Fashion Film, while her live sets are generally more interested in present-day material than in a long tour through earlier releases.
The performance was reportedly Charli’s first of “Boom Clap” since 2023. Before Roan came onstage, Charli explained that she plays one older track each night and had invited a friend to join her for one. The condition, she said, was that it had to be “Boom Clap.” In other words, the revived song was Roan’s request—and the Kia Forum audience got the rare payoff.
A guest request turns an old hit into an event
“Boom Clap” was Charli xcx’s breakthrough hit in 2014. Its return in Los Angeles was not framed as a wholesale revival of an older era, but as a singular collaboration between two artists. That distinction matters. An established song can mean something different when it is selected by a guest rather than simply slotted into a routine retrospective portion of a set.
Roan’s request made the performance feel less like a nostalgia obligation and more like a shared musical reference point. It also gave the arena show a clean narrative: Charli introduced an old song, explained why that particular song had been chosen, and brought out the artist responsible for the choice. Even listeners who did not know every turn of Charli’s catalog could understand the occasion immediately.
There is a practical concert lesson in that setup. A guest appearance works best when it changes the stakes of a song rather than merely adding another person to the stage. Here, Roan’s involvement supplied the reason for “Boom Clap” to return at all. The song was no longer only a catalog favorite; it became a specific request answered in front of a Los Angeles crowd.
What an arena guest spot can—and cannot—tell fans
One-night live collaborations are easy to overread. A guest joining a performer at a concert confirms that the artists shared that stage on that night; it does not, by itself, establish plans for a new recording, a tour-wide pairing, or a future release. In this case, the available details support a memorable performance of “Boom Clap”, not a larger project between Charli and Roan.
That boundary is worth keeping clear, especially when fan clips and short posts can turn a single setlist surprise into a chain of speculation. The concrete takeaway is strong enough without adding assumptions: Roan joined Charli for a song Charli had not performed since 2023, and Roan had specifically asked for that song.
For attendees, the appeal of these moments is partly their limited nature. Arena productions can be tightly programmed, but a special guest introduces an element that cannot be replicated exactly by the following night’s ticket holders. Two nights at the same venue may share a tour framework, yet a particular appearance, song choice, or stage exchange can make one show distinctly its own.
Related coverage includes Chappell Roan Brings ‘Boom Clap’ Back With Charli xcx at Kia Forum.
PinkPantheress and the Dare round out a crowded night
Roan was not the evening’s only visitor. PinkPantheress later joined Charli xcx for “Stateside,” her own song. The Dare also appeared for an extended version of “Guess.” That performance included an unabashedly theatrical visual: pairs of underwear were fired into the audience using a cannon.
Together, the guest spots gave the show three different shapes. Roan’s segment centered on an older Charli song resurrected at a friend’s insistence. PinkPantheress’ appearance shifted the spotlight to her own material. The Dare’s portion pushed an existing collaboration into a larger spectacle. The common point was not simply that Charli brought out guests, but that each appearance had a distinct musical or visual role.
Extended version is concert language for a performance arrangement that runs beyond the standard recorded version. It may introduce a longer instrumental passage, a more spacious ending, a changed structure, or a section intended to make room for staging and audience interaction. The available information does not detail how “Guess” was extended musically, but the underwear cannon makes clear that its presentation was designed as a heightened live moment.
The contrast also reflects the breadth of a major arena pop set. It can hold a direct, emotionally legible callback like “Boom Clap” alongside newer material and deliberately over-the-top staging. Charli’s show did not treat an old hit as an interruption to the current era; it used the unexpected request as part of a larger night built around collaborations.
The tour context: Music Fashion Film moves forward
The Kia Forum concerts are part of a 12-date North American arena tour supporting Music Fashion Film. The run began in Philadelphia on September 11 and includes two nights apiece at Brooklyn’s Barclays Center and the Kia Forum. After Los Angeles, the itinerary moves to Glendale, California, before ending in Las Vegas.
Music Fashion Film arrived July 24. Its singles include “Rock Music” and “SS26,” and the album marks a move toward a more guitar-led sound compared with the electro-dance focus of its predecessor, Brat.
“Guitar-based” is a useful shorthand, but it should not be mistaken for a detailed description of every track or every live arrangement. Here, it identifies the broader sonic pivot attached to the new record: guitars have a more prominent role than on the electro-dance-driven Brat era. The distinction helps explain why an older pop hit such as “Boom Clap” can land as a special detour rather than an expected centerpiece of a show supporting newer work.
Touring behind a new album often involves a balancing act. The artist needs to establish the identity of the new material while leaving enough room for songs that audiences associate with earlier breakthroughs. Charli’s approach at the Forum appears selective: an old song is present, but it arrives as a deliberate exception, with a guest and a story attached. That makes the set’s forward motion intact while still acknowledging a defining earlier record.
Why Los Angeles became the right setting
Los Angeles was a natural place for the run of appearances, given the two Kia Forum dates and the concentration of artists involved. Roan is also scheduled to headline her own two-day Los Angeles festival, Super Graphic Spectacular, the following weekend. That proximity does not prove any broader arrangement beyond the onstage appearance, but it does place Roan’s guest spot within a particularly busy Los Angeles stretch for both performers.
The second Kia Forum date follows the guest-filled Saturday show. Fans should still separate what occurred on the first night from what may happen next: the documented appearances by Roan, PinkPantheress, and the Dare belong to that performance, and guest spots are inherently subject to change. A tour’s basic schedule can be reliable; individual surprises are surprises because they are not promises.
For a wider snapshot of pop performance as an event, readers can also see how another major artist recently approached a milestone full-band set in Taylor Swift’s Academy Museum Gala performance. The through-line is not that these shows are the same, but that a carefully framed live choice—whether a one-off song, a guest, or a band configuration—can become the headline detail that gives a performance its identity.
What made the “Boom Clap” return resonate
The essential appeal of the Kia Forum performance is straightforward. Charli xcx, an artist focused on a new album and its changed musical direction, made room for a 2014 breakthrough hit because Chappell Roan wanted to sing it with her. The night then continued with PinkPantheress and the Dare, turning a single surprise into a fuller sequence of guest-driven set pieces.
That is more compelling than a routine checklist of familiar songs. It connects an older track to a present-tense relationship between artists, keeps the focus on the current tour, and gives the Los Angeles audience a moment unlikely to be recreated in exactly the same way. “Boom Clap” returned, but it did so on a new set of terms.
