I just found this page by coincidence and am totally surprised to see Mayumi Chiwaki here. I was a musician in Tokyo in 1980's and had some musical relationship with her. I tell you she was a very kind & cute woman :-).
Cool! Can I ask your name? Did you play with any other Idol or Technopop artists?
I didn't play a band with her but her band and my band made a compilation album together. She came to my band's gigs and attended our recording session and cheered us all night. Such a cheerful & pisitive woman she was. It was before she became famous, so when she made a couple of smash hits I was very happy :-).