Rebel Heart is the thirteenth studio album by American singer Madonna. After a slurry of unexpected album content leaks that climaxed with the unofficial release of thirteen early demos in December of 2014, the record's release was rushed to March 2015. Six of its tracks were officially released digitally on December 20, 2014. On the same day, Living for Love was released as the album's lead single, followed by Ghosttown. It features collaborations with Nicki Minaj, Kanye West, Nas, Chance the Rapper and was recorded in NY, LA and London. Producers include Madonna, Diplo, Kanye West, Billboard, Avicii, DJ Dahi and Blood Diamonds, Ryan Tedder, Toby Gad and Ariel Rechtshald.