The Roots
THE ROOTS are a collaborative project between 石鹸屋 and COOL&CREATE.
The members are ジュクチョー, hellnian, 秀三, ぺーすけ, and ビートまりお. まこっちゃん, 厚志, and イノ joined for the second album HELL YEAH, although nothing has been said of them staying officially.
Little information is available in English.
http://theroots.sakura.ne.jp/