’Even on the open strings you can tell the difference. The Strad has this resonance, clarity and warmth’

Violinist Ray Chen compares a $69 factory-made violin with the 1735 ’Samazeuilh’ Stradivari violin worth around $10m.

Watch: Ray Chen: What do you do when your E-string breaks in a concert?
Read: Players favour new violins over old in largest ever blind testing experiment