NEW YORK, April 30 -- Freddie Mercury ended a promising studio session with Michael Jackson after the King of Pop brought a pet llama into the recording room.

The bizarre moment became the last straw for Mercury, who was working with Jackson on a series of potential duets in 1983, bassist Jo Burt told the New York Post.

"I think the last straw was when Michael brought his pet llama into the studio," said Burt, who worked on Mercury's solo debut Mr. Bad Guy.

Mercury immediately called Queen's manager Jim "Miami" Beach for help, saying, "Miami, dear, can you get over here? You've got to get me out of here, I'm recording with a llama," as Beach recalled in the 2012 documentary Freddie Mercury: The Great Pretender.

The unlikely collaborat...