Charli XCX joins The Strokes during their Outside Lands headliner set to perform “Take It or Leave It.” The performance happens in San Francisco as part of the band’s Saturday show at the festival.

Outlet reports say Julian Casablancas introduces her with remarks tied to a recent “album sales” comparison, and the two artists also reference that their latest releases arrive on the same day in July. Rolling Stone and Consequence both highlight the onstage banter, including Casablancas’ comments about who “won” the sales competition. Stereogum and NME describe the appearance as a surprise element within The Strokes’ set.

Across the reports, the accounts agree on the song performed—taken from 2001’s *Is This It*—and on the timing: Charli headlines Outside Lands on the night before, then returns to join The Strokes the following day. The outlets differ mainly in how much emphasis they place on the sales-joke framing versus the performance logistics.