 In 1921, Yamaha acquired the in Yokohama after a death of its founder, and continued to manufacture the Nishikawa organs and pianos until 1936.Magna organ seems to be a multi-timbral keyboard instrument based on electrically blown free reeds with pickups, and possibly similar to the electrostatic reed organs developed by Frederick Albert Hoschke in 1934 then manufactured by Everett and Wurlitzer until 1961.The most models and years of introductions are based on official chronicle.