Instruments played in the Tchaikovsky video:

violin I

model A. Stradivari 1705

handmade in 2020

one-piece back of european flamed maple,

italian spruce top.

violin II

model G.B. Guadagnini 1750

handmade in 2020

one-piece back of european flamed maple,

italian spruce top.

viola

model A. Stradivari 1690

handmade in 2020

two-pieces back of european flamed maple,

italian spruce top.