The great animal orchestra: finding the origins of music in the world's wild places

Bernie Krause is the world's leading expert in natural sound. He has spent the last 40 years recording ecological soundscapes and has archived the sounds of over 15,000 species - half of the wild soundscapes he has on tape don't exist anymore because of human actions. Krause divides natural sound into three categories.;Prelude : Echoes of the past -- Sound as my mentor -- Voices from the land -- The organized sound of life itself -- Biophony : the proto-orchestra -- First notes -- Different croaks for different folks -- The fog of noise -- Noise and biophony/oil and water -- The coda of hope.