This is a journey as imaginative and cerebral as it is physical: Lees, now an eminent neurologist, used to frequent the Liverpool docks as a child, with his father, and watch the ships unloading their exotic cargoes of molasses, cocoa and coffee. Years later he travelled in the wake of an early C20th explorer, Lt-Col Percy Fawcett, to Manaus. Both Percy and Lees set out on Carrollian quests: unlike Fawcett, Lees returned. A beautiful composition.