Siberian Earth Curve is a tour de force of sound manipulation. Kneale plays his instruments (guitars, cymbals, flute, appliances) like an egg beater. What is left for the ears is only filtered noise. Snakes Bark Maple is a 17-minute symphony of harsh drones, sometimes imitating ethnic music and sometimes cacophonous and abstrat. Lux is 10 minutes of quiet, distant echoes that sound like a ghost wailing from a grave. Fake Fur Pond is a vortex of sirenes that winds up in a terrifying crescendo. There is no music in Trinity High Water Mark, only disturbing high tones for about 11 minutes. The closing, 16-minute Siberian Earth Curve is even more extreme, as the drones change very slowly. The whistling of a Siberian snowstorms through a window sill would be more musical. Kneale's program is closer to avantgarde composers such as Gordon Mumma than to ambient-rock bands like Flying Saucer Attack.