The track is rumoured to be appearing on Bieber's upcoming album 'Purpose'
Singer has threatened to sue media outlets that published the photos
Pictures of the star naked on vacation in Bora Bora were published by <em>New York Daily News</em>
Both albums will be released on November 13
Singer talks about religious faith in new 'Complex' interview
He also spoke at length about his faith
Singer calls for respect from fans in a series of Snapchat videos
Bieber unsure whether West-produced music will make his next album
The surprise pairing took place at the Universal Inside 2015 conference in Berlin
The singer was appearing on 'The Today Show'