DJ-Tranquilizer was formed by artist Yasutomo Aoyama and musician Otomo Yoshihide in 1996. The group performed minimal music, which was close to noise, and it was quite exceptional at that time. They gave a 5-hour continuous live show at La.mama in Shibuya, performed during the intermission between shows at Music Merge Festival, and played with the group "Omoide Hatoba." For Otomo, the DJ-Tranquilizer laid the groundwork for his next group I.S.O., and the DJ ceased its activities in 1998 without much public recognition. This time, the group performs for the first time in ten years.