 In the film, both she and Beverly D'Angelo, who played Patsy Cline, performed their own singing.Film critic Roger Ebert has credited the movie's success "to the performance by Sissy Spacek as Loretta Lynn.With the same sort of magical chemistry she's shown before, when she played the high school kid in "Carrie," Spacek at 29 has the ability to appear to be almost any age on screen.