​A group of artists born from April 2, 1961 to April 1, 1962, with a focus on grade-based musicians. Formed in 2014 by the bassist "Shinichi Yichikawa" and started live activities. In the year of the 60th birthday in 2021, we are working with the goal of "Let's do a 60th birthday live with people who are in the 61st year of the Budokan all over Japan!"