A couple lines into the song, Judge Joel Madden says, "People are crying."

Indeed they were. And, they were applauding, and they were standing.

The reaction was to the singing of 17 year-old Rachael Leahcar, who is 90% blind. Here appearance was on the Australian version of "The Voice."

Besides Madden, the other judges are Keith Urban, Seal, and Deltra Goodrem. Although it's not in the video, Leahcar choose to be on Team Delta.