The song features guest vocals from rapper Jay - Z and background vocals by Ester Dean .
It was written by Usher , Ester Dean , Jay - Z and Polow da Don , with the latter producing it .
The song features guest vocals from Jay - Z Jay - Z and background vocals by Ester Dean .
It was written by Usher , Ester Dean , Jay - Z and Polow da Don , with the latter producing it .