Yes, this is real.

Apparently in Japan they take the Wanna Fanta thing a bit more seriously than we do here. Fanta assembled a band of Japanese celebrities, each of them representing a different letter of the Fanta name, and now they have recorded what Marty Friedman calls "probably the happiest song I have ever played".

FANTA band is:

Marty Friedman ("F")
Ayanokoji Sho ("A")
Tanimura Nana ("N")
Takamizawa Toshihiko ("T")
Akebono Taro ("A")

You might know Marty from his work with Megadeth, and Cacophony with Jason Becker.