Earlier this week, 33-year-old Brazilian bank worker Anthony Kulkamp Dias sang and played an acoustic rendition of The Beatles’ classic “Yesterday” while doctors operated on his head.
Dias was having a brain tumour removed, but managed to pump out a series of hits. He even took requests, performing an encore of one of his country songs.
Doctors said keeping the patient awake during the operation was a challenge for everyone involved, but allowed them to monitor areas of his brain in real-time.
Check out the video below: