Electronic musical instrument was designed to be a lower-cost alternative to a pipe organ for church music, musicians soon discovered that the Hammond was an excellent instrument for blues and jazz; indeed, an entire genre of music developed built around this instrument, known as the organ trio (typically Hammond organ, drums, and a third instrument, either saxophone or guitar). The first commercially manufactured synthesizer was the Novachord, built by the Hammond Organ Company from 1938 to 1942, which offered 72-note polyphony using 12 oscillators driving monostable-based divide-down circuits, basic envelope control and resonant low-pass filters. The instrument featured 163 vacuum tubes and weighed
Emil Krupa-Krupinsky Emil Krupa-Krupinsky Emil Krupa-Krupinsky (Krupinski) (1872- 1924) German portrait painter, genre painter and graphic artist. Krupa-Krupinski studied at the Kunstakademie Düsseldorf under Eduard von Gebhardt and Fritz Roeber. Eugen struggle influenced him. Krupa-Krupinski was a member of the Artists' Union "Düsseldorfer Malkasten" and later co-founded the Bonner Kunstverein. His most famous image is the "Loreley" (1899), which has been widely reproduced in print. It is now in the City Museum Trier. His paintings were often published as postcards. He was also active as a commercial artist. During World War I he served in Lauenburg Rifle Battalion No.9. He painted for