KMCA-96: beatmania soundtracks:THE SOUND OF TOKYO produced by KONISHI...

[Secret Squirrel]

Credits can be found here:

http://joshinweb.jp/dp/4524334001145.html

I'll let someone who is more familiar with Bemani aliases handle these.

[CHz]

One Atomic Soul Experiences album was executive produced by Kyoshi Yokoyama, and Freddy Fresh says that @kyoshi-yokoyama is Atomic Soul Experiences's SoundCloud account. So ky = Kyoshi Yokoyama

And then Kiyoshi Yokoyama and Masaki Kase both worked on Jaleco games, including together on The Krion Conquest, so ky and Masaki Kase here don't seem like a coincidence.