We have been making a series of field recordings of trees. Initially we focused on the sounds made by the wind in the branches and leaves of trees, and seems to possess an oceanic quality. More recently we have been using contact mics on the trunks of the trees to hear the sound of the rising sap in the xylem tubes. The recordings reveal surprising sloshing and guzzling sounds, as well as knocks, creaks and groans within the timber.
Recordings using two contact mics on the trunk
Small oak in a field
Large Sycamore in the woods
Large Beech in the woods