Lost 4/4 size violin with a distinct scratch on the back near the tailpiece in Southeast Missouri at a music festival.

I lost my violin while attending a music festival in Southeast Missouri last weekend. It's a beautiful, 4/4 size violin made by my late grandfather, and it has a distinct scratch on the back near the tailpiece. I realized it was missing during a crowded performance. It has a brown wooden case with a subtle gold emblem on it. I'm really hoping to get it back, as it's very sentimental to me.