Green Light is an R&B/funk song written by Beyoncé Knowles, Sean Garrett, and Pharrell Williams for Knowles' second solo studio album, "B'Day" (2006). Co-produced by Pharrell and Beyoncé, it was released as fifth UK single on July 30 2007. The Freemasons remix of "Green Light" was on the BBC Radio 1 A-list by July 18 2007.