This is a violin harness made with a piece of string. I use one because after 30 years of playing violin on stage, I developed bad neck aches every time I played. I would recommend to any fiddler/violinist to have a go at this. Not only will it prevent shoulder and neck problems later on, but it helps developing a left hand technique that doesn't grip the neck.
There is a commercial strap system available but I find it useless because it doesn't position the strap in the right spot.
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