I can't even play the guitar when I'm NOT being operated on!

33-year-old Anthony Kulkamp Diaz had a nine-hour-long surgery to remove a tumor from his brain in Brazil. Doctors traditionally keep patients awake during brain surgery to monitor their brain functions, so Diaz decided to take advantage of this...and serenade his doctors.

He was diagnosed with the tumor when his newborn son was just 15-days-old. He says that they removed most of the tumor and he's not in pain anymore. You can read more about the story HERE.