Almost four decades since its domestic release, Karen Marks's 1981 single Cold Café has finally reaped it's deserved international credit to become one of Australia's most recognized minimal wave recordings. Efficient Space now showcases the Melbourne artist's brief but entire discography, including two previously unheard demos. At the 11th hour of preparing this retrospective, two tracks unexpectedly surfaced via two cassettes -- a paranoid demo version of her signature tune "Cold Café", and a long-lost fourth song "Problem Page". Both living room recordings follow Marks and Wednesday's ingenious framework of minimal lyrics, minimal chord progressions. Essential.