The festival had been started in 1921 to promote new types of music and still continues to this day in the town of Donaueschingen in southwest Germany , just north of Zurich , Switzerland ,
Mager premiered his special new instrument at the Donaueschingen Festival , Germany in 1926 .
The festival had been started in 1921 to promote new types of music and still continues to this day in the town of Donaueschingen in Germany Germany , just north of Zurich , Switzerland ,
Mager premiered his special new instrument at the Donaueschingen Festival , Germany in 1926 .