Nah it's good, I found it, it's Toho ^^ and yes, they often release CDs and DVDs of their show so we'll probably see this one on the shelves eventually.
Just a note.. her albums aren't rare--they're all for sale at the Studio Cube WebShop, along with all her (and YuiKaori's) other poster/photocard-type merch. It's just that you have to buy them off the web, and be in Japan. .