Sony electronics is a multinational corporation which is headquartered in Tokyo, Japan. In 2011 Sony ranked 73rd on the Forbes list of top multinational corporations. Sony is one of the top brands in electronics, and this international corporation leads the way with many technical innovations.
Sony's electronics group is owned by its parent company Sony Group. They specialize in research and the development of new cutting edge electronic devices. Sony is widely known as the first company to produce a portable cassette player. Sony achieved this in 1979 and changed the way that people listened to music. Before the Walkman, music was not considered a portable medium. Today, Sony manufactures a wide range of portable audio and video players along with TV's and other electronics.