Trying to find the composer and Opus of a Sonata for Violin (and piano).?

It's played in a travel Video Series on Italy put out by Questar, Inc., called Touring the World. It sounds like Vivaldi, but I can't find it in theme books, so I think it's a different composer. Video is available on Amazon.com. I've contacted Questar, but they're unable to help me.

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