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This is the astonishing moment a concert violinist played his instrument while surgeons looked inside his skull.

Eminent musician Roger Frisch, a concert master with the Minnesota Orchestra, was diagnosed five years ago with a condition that saw him suffer abnormal signals being sent from his brain.

As a result it caused sporadic uncontrollable hand movements.

His condition was so mild that in any other walk of life most people would have been able to carry on as normal with the tremor being left alone.

But as a violinist it threatened to ruin his career.

It had taken doctors a couple of years to diagnose Roger’s problem and then to convince him to agree to undergo experimental Deep Brain Stimulation procedure surgery.

(Image: Everyday Health)

The process involves a tiny electrode being implanted into his brain, which doctors assured him would then allowed him to be able to control the condition at the flick of a switch.

According to EverydayHealth, the chip had to be implanted in exactly the right position for it to be a success.

Surgeons at the Mayo Clinic in Minnesota were able to operate on Roger in real time as the brain feels no pain during such procedures.

They came up with the ingenious idea of placing an accelerometer on the end of his bow to help pinpoint his tremor into a graph on a computer screen that surgeons could watch.

As he played his Balestrieri violin, a team of surgeons inserted a thin wire deep into his brain.

Roger says he felt a difference immediately although his tremor was still there.

He was then asked if he wanted to try another to which he replied, “Why not?”

(Image: Everyday Health)

Following the second implant his tremor immediately stopped.

Dr Kendall Lee, director of the Mayo Clinic Neural Engineering Laboratory, said: "We can place a recording device in the brain and hear the tremors.

"Just touching the brain at the right location oftentimes improves the tremors dramatically.”

Roger said he was “fascinated” by the process, being a “gadget kind of guy.”

Since the operation in March Roger, who’s father Wilbert was associate Concertmaster with the Pittsburgh Symphony, has resumed his position with his orchestra.

(Image: Everyday Health)

He now carries a small device which allows him to turn his tremor off and on with the push of a button that controls the stimulator.

When asked about his operation Roger said: “I was in no way ready to pack up my career, I'm having too much fun.

“As I was lying on the operating table, they put the violin under my chin and as soon as they put the second lead in, I played.

“As for the tremors they are non existent now.”