It was well received and used by a number of musicians in the late 1970s and early 1980s, including the Grateful Dead's Keith Godchaux and Genesis' Tony Banks.
[6] Yamaha had been working on pickup technology since World War II, and took advantage of Japanese culture at the time which permitted research information to be exchanged between companies without threat of intellectual property lawsuits, as in the US.
[3] They used this knowledge to create a series of robust piezo-electric pickups, and combined it with their experience in manufacturing acoustic pianos to make an electric instrument.
[4] According to Toto's David Paich, Yamaha invited a group of pianists in Los Angeles to test the instrument before manufacturing.
[8] The CP-70 was used by a number of prominent keyboardists, including Keith Emerson, George Duke, Charly Garcia, Little Feat's Bill Payne, Heart's Howard Leese, Patrick Moraz, Michael McDonald, Magne Furuholmen of A-ha and Billy Joel.
[10] The Grateful Dead's Keith Godchaux began playing a CP-70 as it was easier to transport one to gigs than an acoustic grand piano.
Led Zeppelin's John Paul Jones encased a CP-70 inside a white case to resemble an acoustic piano.
[1] Genesis' Tony Banks used the instrument extensively, such as the hit "That's All" and "Taking It All Too Hard", and preferred recording with it over an acoustic piano.