If ever there was a seed beating like a shaded heart in The Sea, it was the twined musical filaments of Ketil Bjørnstad and David Darling. The Norwegian pianist and American cellist spoke on that session like siblings, at points giving us a foretaste of the droning flavors we encounter at the edge of The River. The size and scope of the water have changed in name only, for here is the former’s other half, spreading its finger paint across twelve parallel sections.