WAG is a Japanese group formed in 1998 and associated with Giza Studio. Its documented lineup includes 平山進也, 平山裕司, and 柳田圭祐, and the group’s official website has been hosted under the Giza label domain.
These are the most stable facts available for identifying WAG: Japanese origin, late-1990s formation, label affiliation, and a three-member lineup tied to the Giza Studio era. That combination gives the group a clear place in Japanese music documentation and helps distinguish it from other uses of the same name.
