Believe it or not, the original geisha hardly resembled modern geisha in any way. The first geisha were actually male, appearing around the year 1730. It was only about 20 years later that female geisha began to appear in the forms of odoriko (踊り子, meaning dancers) and shamisen players, and they quickly took over the profession, dominating it by 1780.
Geisha, at the most fundamental level, are professional entertainers. They are trained in a variety of Japanese traditional arts, such as dancing, singing, flute, and shamisen (a traditional Japanese three-stringed instrument), as well as the art of hospitality. They also play games and engage in conversation with visitors, all in service of providing the most welcoming and intimate environment possible.