Ever-adventurous pianist Marilyn Crispell in quietly exploratory improvised duets with clarinetist David Rothenberg (in his ECM debut). Rothenberg studied with Jimmy Giuffre and Joe Maneri, amongst others, is active as player-composer and also well known as an author and naturalist, his books including “Why Birds Sing” and “Thousand Mile Song” (an investigation of the music of whales), and the titles here reflect also on the natural world. Tracks include “The Hawk and the Mouse”, “Owl Moon” and “Still Life with Woodpeckers”.