Osaka is Japan's third-largest city and a major commercial and industrial hub, with a population of over 19 million people in the greater Osaka area.
The karaoke machine, which was invented by Daisuke Inoue in 1971, has become a popular form of entertainment worldwide.
Japan's victory over Russia in the Russo-Japanese War of 1904-1905 was the first time an Asian power had defeated a European power in a modern war.