Keith Urban and Nicole Kidman continue to mix business and pleasure!The country superstar revealed to ET that he and singer-songwriter Breland wrote music for Kidman's new movie. Only ET's Cassie DiLaura was on set with Urban and Breland for their new music video for «Throw It Back,» out now, where they dished on their projects together.«We wrote a bunch of songs for a movie that my wife is doing,» Urban shared.