The origin of Japanese rock event, 'ONE STEP FESTIVAL' in 1974.This is the 50th anniversary edition of the concert, compiled from the live master recordings (6mm open reel), with the latest remastering in 2024, and 36 of the 41 groups of all performers on 3 CDs (+ video DVD)!!From August 4 to 10, 1974, in addition to 39 Japanese musicians, Yoko Ono & Plastic Ono Super Band and Kris Kristofferson & Rita Coolidge from the United States also participated.The other performers include Yuya Uchida, Kenji Sawada & Takayuki Inoue Band, Hiroshi Kamayatsu, Sadistic Mika Band, etc.