An Indian musician played the guitar on the operating table to help doctors treat involuntary muscle spasms in his fingers.
Abhishek Prasad was asked to play every time doctors "burnt" a circuit in his brain to treat what is commonly known as "musician's dystonia".
The condition causes painful spasms, twisting and repetitive movements or abnormal postures.
Mr Prasad told the BBC that he was able to play with ease after the surgery.
"By the sixth burn, my fingers opened up. I was normal on the operating table itself," Mr Prasad said after doctors removed the stitches on his head on Thursday, a week after his operation in the southern Indian city of Bangalore.
Dystonia had prevented Mr Prasad from moving his middle, ring and little finger of his left hand when he played the guitar.
"I thought the stiffness was because of over practice. I took a break and tried again and realised that there was no respite from the stiffness. Some doctors told me it was muscle fatigue and I was given painkillers, multi-vitamins, antibiotics, physiotherapy etc," he said.