Beyoncé has surprised fans with the release of a new song called Black Parade.The track was dropped via her Instagram page with a simple black square and the title in bold white font with a 30-second snippet. Moments after the teaser, the full 4 minute 41 second track was released on her YouTube channel as well as other streaming platforms on Juneteenth, a day that marks the anniversary of the end of slavery in the USA on 19 June 1865.