Rainey Qualley, daughter of Andie Macdowell, has joined the cast of indie “Falcon Song,” which Jason Corgan Brown will direct and produce through his Corgan Pictures banner.Described as a new wave Western, story follows a rancher’s granddaughter who reconnects with her mother’s magical past and helps a drifter (Gabriel Sunday) whose arrival forever changes the course of an age-old land war. Ensemble cast also includes Martin Kove, Hart Turner, James Storm and Michael Yebba. Brown co-wrote the script with Emmy winner Michelle Poteet Lisanti. Pic will be shot entirely on location in Montana. Qualley, who recently joined Macdowell in the indie feature “Mother’s Day,” is repped by Innovative Artists and Liebman Entertainment.