I'm a big fan of J-idols, and have recently uncovered an obscure one aimed at children called DECOCHEERS. This Wiki page seems to have all of the information available in English on the entire Internet:
I can't find any other proof of existence of this thing, not even a tracklist. I can't even read the text on the image because my grasp on Japanese is laughable. Is there anyone better at Japanese than I am who might know some tricks for finding this thing? I have my suspicions that the CD is an event-only release, which are always a pain to track down.
I also know there was a manga based on the group - I can find plenty of copies of that for sale. Not really interested in those, though. More interested in the music.
This isn't the only idol-related lost media on my plate, and I could make pages for others, but for now this is the one that's confusing the heck out of me.