Perry officially unveiled her album 143 at the festival's iconic Palco Mundo.
The US singer brought her Midwest Princess tour to the the capital's historic O2 Academy Brixton.
Sting powered through a 20-song, hour-and-45-minute performance.
Aitana and Lola Índigo's shows are among those affected.
The Insomniac Events-produced fest was set to take place in San Bernardino, Calif., Sept. 14-15.
St. Vincent will also be joining the tour for select dates.
Abel Tesfaye played future hits and past favorites in the livestreamed show, just hours after sharing his 'Hurry Up Tomorrow' album cover.
Teezo also won Rookie of the Year honors at the 2024 Billboard R&B Hip-Hop Power Players event.
Originally, tickets for the show ranged from $400 for regular admission to $1,000 for VIP passes.
“Ain’t no motherf---er that’s gonna stop us, I’ll tell you that,” Billie Joe Armstrong says after the band's 10-minute absence.
