A song who's demo was leaked on to the internet on December 17th, 2014, was part of an album that was released on March 6th, 2015 by what record company?
Iconic (song):  The song's demo was leaked onto the internet on December 17, 2014, alongside twelve other tracks from the album, with "Iconic" also being rumored as the album's title. Rebel Heart:  It was released on March 6, 2015, by Interscope Records.
i don't know