I don't know what is this, who's 1056-san. Buuuut months before the release of this LP (GO!GO!7188&1056-san - Seigyo Funou/Niwatori wa tondeikanai), Tokoro George (yes, the one who sang Tokage3gou for GO!GO!'s latest tribtue album) released his original album called KOKEKOKKOU!! ~NANAIRO NO KOWAIRO~ which had 2 songs called "Seigyo Funou" AND "NIWATORI wa tondeikanai". So I had to download this to check, and voi-la! There it is! Yuu and Akko singing in both tracks. So I Guess 1056-san is just a pseudonym of Tokoro George, and these tracks can be found in his album, and not only in LP as we thought before.
BTW, the nitwatori song is really cool :lol: