Steven Tyler & Marilyn Manson Jam With The Hollywood Vampires!

The supergroup known as Hollywood Vampires (featuring Alice Cooper, Joe Perry, and Johnny Depp) were joined onstage by Steven Tyler and Marilyn Manson recently!

The surprise appearances occurred on Saturday night at the Vampires' gig in Los Angeles (at the Greek Theatre).

Tyler jammed with his Aerosmith bandmate, Joe Perry, on "The Train Kept A-Rollin'".

Meanwhile, Manson helped sing Alice Cooper's "I'm Eighteen".

Check out the performances below!

- East Side Dave