According to the announcement on the following Japanese web page, this group, called Kado (or, literally, “flower children”) is performing every Friday, Saturday, and Sunday at the Sakura no Baba Jousaien, near the international center downtown:
http://www.sakuranobaba-johsaien.jp/d/news/info/detail/id/261
The movie is of performances at Suizenji Park.
The Kado performances are part of a program including other performances. I’m sorry that I can’t take the time to translate all of the details. If you are interested but unable to read the Japanese, please ask a friend for help.
– Kirk