Can you spot every legendary singer in this backstage jam session?

Joni Mitchell, Sir Elton John, Chappell Roan, Brandi Carlisle and other musicians had an impromptu jam session backstage at the Hollywood Bowl over the weekend.

The group, including Lucy Dacus and Allison Russell, performed a version of Sir Elton's 1983 hit "I'm Still Standing."

Mitchell was at the iconic venue to perform two sold-out concerts in her first headlining shows since 2000.

She was filmed tapping her cane on the floor as the artists came together for what Sir Elton described as “the ultimate backstage Joni Jam."