Psychedelic Baby Magazine has published a long-form interview with Hiroyuki Takahashi, a drummer who stood at the centre of Tokyo's early-1970s underground where rock, free jazz, experimental film and radical theatre overlapped. Takahashi co-founded Lost Aaraaf with Akira Asami and Keiji Haino, played with Takashi Mizutani in Les Rallizes Dénudés, and in 1974 started Eternal Womb Delirum, a group that blended improvisation, film, electronics and even physiological measurement. Beyond performing, he organised concerts, toured Woodstock and Monterey Pop around Japan on PA systems to demonstrate how rock should sound, and later founded Idol Japan Records and the DEAD FLOWER label. The conversation, conducted by Klemen Breznikar, revisits Apple House, the Sanrizuka Genyasai festival where Lost Aaraaf's ritualistic set provoked boos and thrown stones, the January 1972 experimental concert where Takahashi debuted with Les Rallizes Dénudés, and his drumming philosophy built on ma — the space and silence between sounds. Takahashi's remark that the drive to create music that had never existed before was what he regarded as ROCK itself frames the interview's historical weight.