What happened in this Culture story?

Charli xcx broke from her usual current-material-only setlist at the Kia Forum in Los Angeles on Saturday night, performing her 2014 hit "Boom Clap" with Chappell Roan as a surprise guest.

What is a key fact in this story? (1)

**Charli xcx** performed her 2014 breakthrough hit "Boom Clap" at the Kia Forum in Los Angeles on Saturday night, a notable departure from her usual approach of staying focused on current material.

What is a key fact in this story? (2)

**Chappell Roan** joined Charli xcx on stage during the "Boom Clap" performance as a guest collaborator.

Charli xcx & Chappell Roan Perform 'Boom Clap' in LA — SkimNews

By Variety · Summarized & edited by Kapil Samant · 2026-10-18

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Charli xcx performed her 2014 breakthrough hit "Boom Clap" at the Kia Forum in Los Angeles on Saturday night, a notable departure from her usual approach of staying focused on current material.
Chappell Roan joined Charli xcx on stage during the "Boom Clap" performance as a guest collaborator.
The song choice marked an exception for Charli xcx, who the source notes is typically "laser-focused on her current material and rarely looks back for more than a couple of songs."

Why it matters: For fans tracking the Charli xcx and Chappell Roan crossover moment, the pairing of two of pop's most buzzed-about artists on a decade-old hit suggests both artists' management see value in linking their current rises. Charli xcx deviating from her own catalog norms signals this was treated as a special occasion, not a standard tour stop.