As Grammy-winning composer John Luther Adams puts it, his latest work An Atlas of Deep Time "... is grounded in my desire, amid the turbulence of human affairs, to hear the older, deeper resonances of the earth." Commissioned and recorded with the South Dakota Symphony Orchestra under the baton of Delta David Gier, the piece taps into an ancient resonance that seems to hover imposingly, but benevolently, over our own existence - itself a blip in geological time. "You can sit for a long time with the history of man like a stone in your hand," said the late author Barry Lopez, a lifelong friend and mentor to Adams. His words serve as the written invocation to a work that beautifully captures the sense of majesty, mystery and vulnerability that we, and the natural world, hold within us.