Lady Gaga is showing off her country music skills in the first trailer for her new movie, "A Star Is Born." The film stars Gaga as a unknown singer who is discovered by a country music star played by Bradley Cooper. The new trailer shows Gaga's career taking off as the two start to fall in love. "A Star Is Born" is Gaga's big screen debut, and the first project ever directed by Cooper. Cooper plays country star Jackson Maine who falls for Ally, who is played by Gaga. Andrew Dice Clay, Dave Chappelle and Sam Elliott also star. A Star Is Born premieres October 5.