A commission for Groundwork from CAST. St Keverne band members were posted in a triangle, high up on the river banks, among the ancient oaks. They were accompanied by a wandering voice singing from a reclining position hidden in Adam Chodzko’s kayak Ghost; the voice appeared to rise from the water. This was timed to coincide with the high tide at the autumn equinox, when the moon exerts the strongest tidal pull. The composition was accordingly written by Gareth Churcher in nine movements that traced the progress from new moon to full, through Waxing Crescent and Waxing Gibbous. From the apex or centre Full of the Moon, the composition was simply played in reverse, mirroring the phases of the waning moon.