At the age of 100: Karaoke inventor Shigeichi Negishi dies. In 1971, Daisuke Inoue put together a cassette recorder, a small guitar amplifier and a microphone, put everything in a small red and white wooden box and fitted the whole thing with a coin slot.
Four years earlier, in 1967, a car radio entrepreneur in Tokyo had the same idea. He then had a prototype built in the company that manufactured car radios that was very close to the later product.