Chacha was in Gerard? I have a couple of their albums but I'm not sure he is on them since they changed their lineup alot.

I am not undermining the official GA webshop but the vast majority of Gerard stuff is out of print and easy to get through shops like Third Stage in Tokyo who have a full English language site and ship Worldwide. Their stock changes all the time but I've bought both Ded Chaplin and Gerard off them before. http://www2.mandrakeroot.co.jp/english/

You need to register before you can see their stocklist though.

Hope that helps......mmmmmm Japanese prog rock...