The brain is a funny thing. The one organ that is responsible for all of our thoughts and feelings actually doesn’t have any nerve endings. That why when doctors perform brain surgery, they frequently keep their patients awake as they feel no pain anyways and they are able to ask the patient important questions. 

Professional opera, concert, and choral singer Ambrož Bajec-Lapajne was diagnosed with a brain tumor and his neurosurgeon advised him to be awake during the procedure so they could accurately gauge what parts of the brain they were working with. In this intense viral video, he sings parts of Schubert’s Gute Nacht during his surgery.