Some of the world's best violins and cellos come from this part of the world.
Petrof pianos have been built in Hradec Kralove since 1864, Hofmann & Czerny in Jihlava since 1871.
The year was 1953, the city was Blatna, and the company was the Drevokov Cooperative.
As it says on a 1957 warranty card, "Resonet: the mark of the first Czechoslovak electrophonic instruments".
Since the name refers to electronics and electric sound, it is usually found on pickups and pickguard assemblies, not on an instrument's headstock.
There were others, including Resonet, Neoton, Lignatone and others.
But these were all just different brands, produced by various factories in different cities.
The last independent firms were forcibly nationalized by the early 1950's.