Lady Gaga will appear Saturday at the 27th Annual Producers Guild Awards to perform “Til It Happens to You,” her Oscar-nominated song from the documentary “The Hunting Ground.” Producer Amy Ziering will accept the film’s 2016 Stanley Kramer Award during the PGA’s ceremony at the Hyatt Regency Century Plaza in Los Angeles. “The Hunting Ground” deals with the issue of campus rape. The film is written and directed by Kirby Dick and produced by Ziering. “Til It Happens to You,” written by Diane Warren and Gaga, is up for best original song at the Academy Awards.