"The Vincent Bach Corporation is an US manufacturer of brass instruments that began early in the twentieth century with the trumpet Aros and still exists as ...
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a subsidiary of Conn-Selmer, a division of Steinway Musical Instruments. The company was founded in 1918 by Austrian-born trumpeter Vinzenz Schrottenbach (Vincent Bach) who made the first trumpet under the name of Aros." - (en.wikipedia.org 11.01.2020)