The primary feature on the original track (2007) is Usher . While the song is often credited as a duet, it officially appeared on R. Kelly's album Double Up featuring Usher. Additional Features and Versions

: The official remix of the song features T-Pain alongside R. Kelly and Usher . This version is notable for R. Kelly's use of Auto-Tune.

: The music video, directed by Director X , features both artists and is well-known for its "twist" ending involving twin sisters. Song Background