Chappell Roan, Joni Mitchell, Allison Russell, Lucy Dacus, and Blake Mills jammed with Joni Mitchell and Elton John backstage at the Hollywood Bowl.

Joni Mitchell and a host of artists and collaborators took over Los Angeles' Hollywood Bowl for her annual Joni Jam.

Brandi Carlile, Annie Lennox and Meryl Streep also joined Elton John backing up Joni Mitchell on her "I'm Still Standing" cover.

Almost a decade after suffering from a brain aneurysm, Mitchell has slowly returned to performing Name a better surprise guest at a concert than Sir Elton John. Over the weekend, legendary folk singer Joni Mitchell performed a rare pair of shows at the Hollywood Bowl in Los Angeles.

Nina Westervelt Over the weekend, Joni Mitchell and an all-star ensemble of friends and collaborators took over Los Angeles’ Hollywood