Adam Lambert Rocks Out at 'Rock in Rio' with Queen

Adam Lambert takes the stage with Queen during the first day of the Rock in Rio Festival on Friday night (September 18) in Rio de Janeiro, Brazil.

The leather-clad rocker and the legendary group performed at the festival’s 30th anniversary alongside other acts like OneRepublic and The Script.

PHOTOS: Check out the latest pics of Adam Lambert

The group has been on tour in South America to massive crowds. Adam took to his Instagram to share an impressive photo of the crowd from one of their concerts.

“Just 80k people. Small crowd,” he jokingly captioned the image.