When DJ Jeff Mills’ Live at The Liquid Room , recorded in Tokyo in 1995 , got its major release in winter, on Axis LPs and Apple Music, it was as if techno’s ten commandments had dropped from the sky — the electronic music version of every bootlegged Grateful Dead tape squeezed into one sweaty 67-minute mix.  Once considered the dance genre’s iciest sound, Mills made techno into one long emotionally cinematic score. Surprisingly, too, with a then-fresh, sizzling brand of minimalism that became the bedrock of all electro music that followed. Within the walls of Tokyo’s hottest nightclub (if you can read Japanese, here’s a schedule ), Mills meshed together, in Möbius strip-fashion, his most subtly frenetic tracks such as “Utopia”, “The Extremist (Retro Mix)” and “Untitled A (The Bells)”, with the molten lava-like “The Start It Up” (a tune by Joey Beltram) and “the Other Side” (by The Shadow), for a cherished evening thought lost to time and molly-filled memory. Until now. “Jeff Mills, a.k.a.…