Time (The Revelator) is haunted even more by specters from the past. Traditional folk heroes such as Casey Jones and John Henry show up in songs, as do more modern ones like Elvis and the migrant Okies of both John Steinbeck's and Woody Guthrie's oeuvres. Welch and Rawlings, accompanying themselves on acoustic guitars, complete the evocative trilogy with this resplendent work. The bookends, "Revelator" and the 14-minute closer "I Dream a Highway," set up and resolve the album's thematic ties, but "April the 14th Part I" grounds its middle. Offering an allegory for mundane, daily dread, the song is a weighty meditation on the cycle of life. It's modern Appalachian folk (Welch was one of the three singing sirens in O Brother, Where Art Thou?) at its most timeless.