I've taken a look at the J-Wiki article for Hiromi Iwasaki's（岩崎宏美）"Wish" album which came out in August 1980, and although it's been categorized as aidoru kayo, I think when Iwasaki's hair became those long and flowing locks and she became a fan of nail polish, the aidoru part of her career was retired to be replaced with some great pop works.
Yup, I am indeed looking at the cover of "Wish", and one of the tracks from the album certainly doesn't sound aidoru. "ROSE" is imbued with the Japanese meaning of "moody" and images of contemplative drinkers in expensive hotel bars come to mind rather than bouncy teenyboppers. It was around this time that she was showing more of that urban contemporary side to her and I was more than happy.
"ROSE" was written by Rei Nakanishi（なかにし礼）and composed by Kyohei Tsutsumi（筒美京平）with arrangements handled by Tsugutoshi Goto（後藤次利）. "Wish" peaked at No. 14 on Oricon. Love the trumpet solo and Hiromi's enticing vocals.