Now do one for Stradivarius violins.
That has been done multiple times. It is easy: just record the sound and compare acoustic signatures. And yes, Stradivarius is different. https://www.theguardian.com/science/2018/may/21/scientists-f...
Surely if they wanted to show that strads sound different they'd need to test whether their method lets them predict whether an unknown recording is a strad or not?