LAS VEGAS (AP) — Bradley Cooper has unveiled the first trailer for his directorial debut “A Star is Born” for CinemaCon attendees Tuesday evening to hearty applause. Cooper stars in his remake of “A Star Is Born” alongside Lady Gaga as a burgeoning singer. He says his co-star is a revelation in the film. Cooper told the audience of theater owners and exhibitors that he knows that this movie is a big swing, but says you can’t control what moves you. “A Star is Born” is three years in the making, and features live-singing on real stages at festivals like Glastonbury and Coachella. It hits theaters on Oct. 5.