The single B♭horn shown above is of typical design with the notable exception that it is made right-handed. This appears to be a standard for Musikhaus Hans Kreul since the only other examples found, a single F and another single B♭, are also right-handed. No double horns have been found.

Musikhaus Hans Kreul was established in Tübingen, Germany in 1919. In an interview in 1984 with Nora Post for the International Double Reed Society, Hans-Joachim Kreul gave the following summary of the company's history:

HK: Well, my grandfather came to Tubingen during the First World War. He was a violin maker and a bowmaker. He died just before the Second World War. Our production stopped completely during the war. No one in Germany made musical instruments during that time. Then my father started up again after the war, in about 1948 or 1949. There was nothing to start WITH after the war - it was terrible.

NP: So how did your father begin again?

HK: He started by repairing band instruments for the American brass bands in Germany. The Americans gave him cigarettes, and he exchanged the cigarettes for the materials he needed to work on the instruments. They started with repairs, and then began to make some relatively simple clarinets and flutes.

In 1948, everyone in Germany was at point zero. Each person was given forty marks from the government, and that's how we all started again.