Olivia Rodrigo Sings On Stage With Billy Joel!

Billy Joel fans were surprised when Olivia Rodrigo made an appearance at his Madison Square Garden show on Thursday (August 24)

Rodrigo performed her hit, “Deja Vu,” and Joels’ “Uptown Girl.” Olivia made the appearance following a reported breakup with a music executive.

What legendary artist would you pair with a newer artist?