Its origin's: The harp as it is today is 150 years old but the free-swinging reed goes back over 2000 to the Sheng, who's invention was attributed to the then emperor of Japan. Currently it is the peoples instrument of China. It is annually the most sold instrument in the world. Whether you look at that statistic, country by country or apply it globally it remains true of those nations that enjoy an economy that allows the sale of manufactured goods. It has retained this prominent position since 1922, when the popularity of the 'Borrha Minovitch Harmonica Gangs' brought it to prominence, till 2003, when the last stats were compiled.