Eminem: I'm wild like Rihanna

Eminem likes working with Rihanna because they're both "nuts".

The Barbadian singer and the rapper collaborated for track The Monster, which features on his album The Marshall Mathers LP 2.

Eminem revealed why he was keen for the 25-year-old to feature on the song.

"The perception of the record, what it's saying, I thought it would be a good idea to have her on it because I think people look at us like we're both a little nuts," he explained to MTV News.

"That's one of the things that I was telling her in making the record, 'I think that people look at us a little crazy.'"

Rihanna is a hot choice for many artists and she's also appeared on tracks with Ne-Yo, Coldplay and Nicki Minaj.

It was an easy choice for Eminem, 41, to make.

"As soon as I got the beat I just heard her on it," he revealed. "I wanted to make sure that I had it finished first to be able to present to her, but once I had the rhymes done, I sent it to her."

It's not the first time the duo have worked together - they first collaborated on Love the Way You Lie in 2010.

This time around they weren't granted any studio time however.

"I had to send it to her because schedules were conflicting and sh*t like that. Plus, the record it was kinda pulled together at the last minute," Eminem said. "I sent it to her, she laid the hook, sent it back. She smashed it like she does always. It's pretty incredible."