Lady Gaga made a surprise appearance at this year's Producers Guild Awards for a special performance of her Oscar-nominated single "Til It Happens to You" on Saturday night.

"A big thank you to everyone who has supported this song," Gaga told the audience before singing the song. "It's not only an important issue to me, it is an important issue to my family, because when my father's sister was in college, she was sexually assaulted and then it tormented her so emotionally that it caused lupus that got so bad that she died. My father was 16, and it affected my family tremendously. This song means so much to me and so much to my parents. So thank you Diane Warren for writing it with me."

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