Yamaha has reached a major milestone: the 45th anniversary of the 1980 release of the PS1, PS2, and PS3, the company’s first digital keyboards. With the support of a great many people, we have shipped a total of 450 different models—around 60 million units—to customers around the world. Here we will look back on the 45-year history of Yamaha digital keyboards, revisiting the key products, highlighting stories of note, and looking at the historical background of each era.