Question: 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?
Sentence (from "Rebel Heart"): Following the completion of the "MDNA" release and promotion, Madonna worked on the album throughout 2014, co-writing and co-producing it with various musicians, including Diplo, Avicii, and Kanye West.
Relevant evidence: No