On Thursday evening, Olivia Rodrigo made her debut at Lollapalooza Chicago and was joined by Weezer to perform their tracks, "Buddy Holly" and "Say It Ain’t So".

The singer/songwriter was then joined onstage by Weezer trio Rivers Cuomo, Brian Bell and Scott Shriner to play Buddy Holly and Say It Ain't So, the second and third singles lifted from the band's ...