Apocalypse finds Callahan all at once wearing the shoes of a gardener, cattle driver, sailor and songwriter as he ponders the rugged and untamed background of America. He does so with brief distorted riffs, flutes, distant keys, whistling and earthy percussion paired with his baritone vocals. This album is beautifully executed yet never feels like it was labored over. Callahan's voice is confident and casual (listen for Callahan's vocal clicks, and "oohs") just as the instrumentation is assuredly rehearsed, but at times feels improvised over Callahan's delivery.
The beauty found on Apocalypse is both familiar and mysterious. Callahan doesn't pretend to understand his revelations, but places them in a context we know and want to explore.