Yamaha Corporation is a Japanese multinational corporation and conglomerate with a very wide range of products and services. It is one of the constituents of Nikkei 225 and is the world's largest piano manufacturing company.
The former motorcycle division was established in 1955 as Yamaha Motor Co., Ltd., which started as an affiliated company but later became independent, although Yamaha Corporation is still a major shareholder.
Nippon Gakki Co. Ltd. (currently Yamaha Corporation) was established in 1887 as a piano and reed organ manufacturer by Torakusu Yamaha in Hamamatsu, Shizuoka prefecture and was incorporated on October 12, 1897. The company's origins as a musical instrument manufacturer are still reflected today in the group's logo—a trio of interlocking tuning forks.
Yamaha has grown to become the world's largest manufacturer of musical instruments (including pianos, "silent" pianos, drums, guitars, brass instruments, woodwinds, violins, violas, celli, and vibraphones), as well as a leading manufacturer of semiconductors, audio/visual, computer related products, sporting goods, home appliances, specialty metals and industrial robots.
According to en.wikipedia