Madonna, Mike Tyson Collaboration on New Single

Music icon Madonna has recruited an unlikely personality for her much-anticipated new album - former undisputed heavyweight champion Mike Tyson.

The pop star's forthcoming record, Rebel Heart, is slated for release on March 10, 2015, and a track list was leaked on iTunes on Monday, revealing the singer's most bizarre collaboration yet.

One of the 19 tracks, titled Iconic, features rising MC Chance the Rapper and retired Hall of Famer Mike Tyson - but it is unclear what he does on the track.

In 1998, Tyson made a cameo appearance on rapper Canibus' popular single "Second Round K.O." Tyson also appeared in the video for the track.