Castlevania III: Dracula's Curse composers

[Keiyuu]

Hey, I want to ask something about the composers of Castlevania III: Dracula's Curse (悪魔城伝説).

According to VGMdb the three composers are Hidenori Maezawa, Jun Funahashi, Yukie Morimoto.
But many other sites, mostly Japanese also list Motoaki Furukawa. It's really confusing...

Here are some sources:

His Wikipedia page where the game 悪魔城伝説 is listed
http://ja.wikipedia.org/wiki/%E5%8F%...85%83%E4%BA%AE

Wikipedia page of the Konami Kukeiha Club where the game is also listed under his name
http://ja.wikipedia.org/wiki/%E3%82%...A5%BD%E9%83%A8

Then this site
http://www36.atwiki.jp/gmcomposer/pa...toaki_furukawa

There are some more sites where his name is listed in connection with the game but these seemed the most reliable ones to me.

Can someone please explain this to me?