Former boxing champion Mike Tyson has admitted that it was "really intense" recording a track with global music star Madonna.

It was confirmed earlier this month that the retired sportsman had collaborated with the pop icon on her new album Rebel Heart.

Tyson will feature on track 'Iconic', but has revealed that there is no singing or rapping involved in his contribution.

"Madonna calls you and tells you to come somewhere, you go," Tyson told Rolling Stone. "I didn't know what the hell I was going there for.

"I'm just there having a good time and hanging out with Madonna. She has her producer there and I go into the studio and I didn't know if she wanted me to talk or rap.

"I just go in there and start talking. I'm talking about my life and things that I have endured. I'm saying some really crazy stuff. It was really intense."

Chance The Rapper also features on the track.