It’s the rare artist who winds up defining a genre. Pina Bausch was one of them. The German choreographer who died last year popularized the “tanztheater” style, which blends movement with a variety of theatrical elements, including, in her case, sets that were extensive and impressive.

Above all, Bausch was dedicated to movement as a form of expression. Her pieces are characterized by incredibly human and often passionate dancers who never bear those vacant eyes that are so common in modern dance.

Tonight, the Hirschhorn is showing a documentary that details Bausch’s efforts to train a group of non-dancing teens in expressive movement. Among other things, the 89-minute movie features Bausch’s last on-camera interview before her death. Free and in German, with English subtitles. 8 p.m.