Lady Gaga Surprises Audience, Joins Adam Lambert & Queen On Stage to Sing 'Another One Bites the Dust'! (Video)

Lady Gaga steps off of an airplane onto the tarmac on Wednesday (August 27) in Sydney, Australia.

Later that evening, the 28-year-old entertainer stopped by the Queen concert, where she surprised Adam Lambert and co on stage for a song!

Gaga and the guys sang the hit song “Another One Bites The Dust” together to the screaming fans – check it out below!

Later, Adam posted a cute pic on Instagram. “So much fun tonight! @ladygaga” he wrote.

10+ pictures inside of Lady Gaga arriving in Sydney before the Queen concert…