The American luthier Jason Kostal was one of the exhibitors of the Salon de la Belle Guitare of the Guitares au Beffroi 2017 festival. He was present in Montrouge with Michael Watts, a British professional guitarist who made the demos of Jason's guitars.

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Jason Kostal interview: top acoustic guitar luthier

Here's an interview with Jason Kostal an American luthier who has been building top quality acoustic guitars for several years.