The 32-year-old singer, who recently released an album, posted a video on her YouTube page of cancer patient Taylon, reported People magazine.
In the video, the wheelchair-bound girl, whose dying wish was to dance with Jay Z's wife, said, "I am having so much fun. I can't wait to see Beyonce."
The singer-girl duo sang 'Survivor' together, and the tears rolled down her cheeks even after Beyonce parted ways onto the stage.