Should the arranger credit to ギラギラメガネ団 really go only to Jun Wakita? ギラギラメガネ団 appears to be a band with the other performers, not just himself:
http://www.konami.jp/bemani/popn/mus.../06/06_01.html.
(I was going to ask about the romanization of "Gyragyra" too, but that page also links to gyragyra.com so maybe that's okay.)