London four-piece Speedial blend melodic post-rock, shoegaze, math rock, jazz fusion and noise-rock into a captivating and distinctive sound, reminiscent of everything from Deerhoof and Big Thief to Radiohead, Faraquet and the atmospheric textures of David Bowie's Blackstar. Dual vocalists Serena and Millie weave intricate harmonies over complex instrumental landscapes, with saxophonist…