Having listened to aidoru throughout the 80s, I've come to a couple of opinions. One is that the really early 80s aidoru tunes up to about 1983 often had that innocent country girl-in-the-summer arrangement whereas the later 80s examples incorporated some more worldliness in the music while still maintaining that usual aidoru-ness. I once borrowed a mix tape of aidoru songs from an acquaintance and I'm still occasionally kicking myself in the keester since I didn't really keep a good memory of what I listened to. The only tracks I can remember involved Sonoko Kawai（河合その子）and Sayuri Kokusho（国生さゆり）, but what I do remember about the songs themselves is that the lot of them had that attractive worldliness I've just mentioned (yes, I am aware that I am talking about aidoru, not timeless classics here).
Case in point: I was just doing my random little walk through YouTube and found a few Tomoko Aran（亜蘭知子） tunes. I have covered a few of her songs as she tackled some of that City Pop but she's probably much more famous as the lyricist for TUBE's big early hits such as "Summer Dream".
Still, I found out that she also provided the words to this song, "Terminal" which was the 2nd single by aidoru Rie Hatada（畠田理恵）. After listening to it, I realized that this was another interesting little gem illustrating some of that worldly late 80s aidoru music, and it was special especially since it involved an aidoru who hadn't been connected to Onyanko Club (Kawai and Kokusho were members).
The Osaka-born-and-raised Hatada was scouted by entertainment promotion company Big Apple in 1986 after she had entered and done well in a couple of magazine-sponsored beauty contests. She promptly dropped out of high school and took that train to Tokyo to start her career, initially appearing as a variety show tarento program on TBS titled "Momoco Club"（モモコクラブ）sponsored by the female aidoru magazine "Momoco".
Then in 1987, she debuted as an aidoru in March with "Koko dake no Hanashi -- Ofureko"（ここだけの話 〜オフレコ〜...A Secret - Off The Record）which peaked at a respectable No. 13. "Terminal", which would turn out to be her most successful record, was released three months later and went as high as No. 12. I was drawn to the combination of the typical aidoru beat and that Latin infusion although Hatada's vocals weren't exactly remarkable. Latin fusion musician and composer Naoya Matsuoka （松岡直也）was responsible for the music and if the last few bars of "Terminal" sound somewhat familiar, it might be because they also popped up in the last several seconds of a more successful Latin-spiced song, "Meu Amor e" by Akina Nakamori（中森明菜）. And guess who was responsible for weaving that classic?
Speaking of Nakamori, up until her 4th single in 1988, Hatada had been being groomed to emulate Akina's style but from that point onwards, the powers-that-be decided that she would take on a more coquettish Momoko Kikuchi（菊池桃子）brand.
As I said Rie Hatada wasn't exactly the best singer, but, hey, it's the overall effect of aidoru vocals, music and nostalgia that had me enjoying "Terminal". She released 8 singles and 2 original albums in total between 1987 and 1993. Also, she appeared as an actress during that same period before retiring from the industry in 1996 after marrying shogi champion, Yoshiharu Habu（羽生善治）.