I m looking for a song!?

The song is a countdown and I think that it is about breakup or love. It's by a female. I think it counts down from somewhen in the 20's. So 20-19-18-etc. Though it might not. IT'S NOT BEYONCE COUNTDOWN!! The song is a countdown and I think that it is about breakup or love. It's by a female. I think it counts down from somewhen in the 20's. So 20-19-18-etc. Though it might not. IT'S NOT BEYONCE COUNTDOWN!!