price around ¥350.000 at that time. 1960 — A-2 The first Electone model with only a single keyboard and a single octave pedal. With the price of ¥128.000, mostly used for students. Discontinued in 1963. 1962 — E-1 The highest and expensive Electone model at that time, with the price of ¥647.000 in 1962. 1964 — F-1 Electone's first "pipe" organ model and rarely known, that was built for 15 years, from 1964 to 1979. The original price tag was around ¥2,200,000, removing the E-1 and making it the most expensive Electone models in its era. 1966 — A-3 Electone's first combo organ, but only equipped with a single keyboard and an expression pedal. 1966 — F-2 Another Electone's "pipe" organ product. Discontinued in 1975. Price tag was around ¥1,350,000. 1967 — D-2B The first Electone Model that was import by Nippon Gakki to USA. 1968 — E-3 Yamaha's top model at that time, mostly for stage purposes. Original price tag was ¥800,000. 1968 — EX-21 Prototype The EX-21 was known as a prototype for the upcoming futuristic, space-age style stage organ models in the future. Different from prior Electones, it was expressly designed for stage performances. Named 21 based on the word, "21st century", which basically meant, "Futuristic organ from the 21st century". The sounds and recordings can be heard from the "Electone Fantastic!" Album, in both volume. 1970 — EX-42 This became Yamaha's first commercially available stage model Electone. The name was based on its prototype, EX-21, but multiplying two times. It was also the first to use integrated circuits, although it was still based on analogue technology. Famous Electone players such as Shigeo Sekito used this instrument to make "Special Sound Series", known as "華麗なるエレクトーン" (1975-1977). It was built from 1970 until 1977. When released in 1970, in Japan this sold for ¥2,800,000, while in the US, the EX-42 had a $32,000 price tag. That is $200,000 today when adjusted for inflation, and it is rumored that less than 200 of these were built. 1972 — D-3R Another top model of Electone models, mostly used for homes. 1974 — Designing of Electones around synthesisers, instead of organs 1974 — CSY-1 Based on the SY-1 synthesizer. 1975 — GX-1 (a.k.a. GX-707) The first polyphonic synthesizer in Electone form, bridging the gap between synthesizer and organ. It used velocity-sensitive keyboards and the solo keyboard was even after-touch sensitive. The