Sandra Brennan and James ManheimPatsy Montana was the first woman in country music to have a million-selling single — 1935s I Want to Be a Cowboys Sweetheart — and was a mainstay on the National Barn Dance on Chicago radio station WLS for many years. She might also have been country musics first female session musician. In the 30s and 40s she was the sweetheart of many a movie cowpoke, appearing in numerous western films, and her success encouraged the traditionally male-oriented country music business to welcome and respect the scores of female performers that followed her.