Lady Gaga was brought to tears at the American Music Awards ? not by receiving some trophy, but by her fans serenading her with her latest hit song. Gaga was leaving Microsoft Theater Sunday night when she got swarmed by a throng of her supporters, who joined in on a group sing-a-long of her single ?Million Reasons? ? which she had performed that night. The sort of on-key encore, clearly struck a chord with her. Watch the video and continue reading at TMZ?