Beyonce has released an experimental new track for free on her Tumblr page.
Bow Down/I Been On has the popstar singing the words: "I know when you were little girls, you dreamed of being in my world... I took some time to live my life, but don't think I'm just his little wife."
Its chorus repeats the words: "Bow down b******, bow down".
The track features heavy vocal distortion and a repeated synth melody. It is accompanied by a photo of the singer as a young girl, standing in a room filled with trophies.
Publicists for the singer have refused to comment on a leaked tracklist for her as-yet untitled new album.
She is set to go on a world tour titled The Mrs Carter Show.