The Vincent Bach Corporation is an American manufacturer of brass musical instruments that began early in the twentieth century and still exists as a subsidiary of Conn-Selmer, a division of Steinway Musical Instruments. The company was founded in 1918 by Austrian-born trumpeter Vincent Schrotenbach (Vincent Bach).he Bach line of brass instruments continues to be made in Elkhart, Indiana, using the same blueprints and the same techniques as the originals. They are sold as a premium brand under the name “Bach Stradivarius” as well as the student line “Bach” horns.