This album was released as a promotional item that came with the limited edition of Hanjuku Hero IV: The Seven Half-Boiled Heroes. The composers gave themselves the name "Nobuo Uematsu & The Hanjuku Mages" to the point that 'The Hanjuku Mages' is actually printed in the bottom right-hand corner of the album cover. Sekito & Fukui are present, the arrangers and band-members of The Black Mages and their 2nd album, as well as Okamiya, who also arranged said album, as well as playing guitar.
Just as this news article begged, "somebody please tell me what's going on." The Hanjuku Mages? One must also take note of the egg sandwich cover, which is not the most normal of OST covers. Is this some crazy piece of rock/egg/vapid music? Given the amount of input from various Square-Enix music staff, one really must wonder...