These days it’s all meant to be about tracks, not albums; modern music listeners, it’s said, have pitifully short attention spans and skip flightily from one song to the next, like bees with ADHD in a blossoming orchard, without pausing to put each song in its proper context. But the third collection from Guillemots, the four-piece band who originated in Birmingham, is a proper, old-fashioned album: Walk the River has shape, structure, almost a narrative arc, taking the listener on an emotional journey that goes from despair to hope to joy to resolution.