It has to be Beyonce, I mean girl needs to release something now....but there is a possibility that it might be Shakira's new single. Tim Mitchell her musical director tweeted this a few days ago:
When? TONIGHT Where? THE DANCE FLOOR With Who? THE DJ Why ? Cuz we can Top theme for writing dance hit
It could be related to Truth or dare....
It can be Avril too, the writer of her 1st single tweeted this:
I think it'll be Miley cause Beyoncé said her album would be r&b right?
And it can't be Gaga, like how is she supposed to promote it if she's in a wheelchair