My favorite thing about this song has to be the beat; it's such an unusual pattern to use in triple meter. Compound their sense of rhythm with their talent for creating varied, yet beautifully complimentary layered arrangements and you've got yourself a recipe for some awesome music. Their progressive sound has not only distinguished them as a music act alone, but it has even allowed them to contribute music to an upcoming (and equally progressive) video game, No Man's Sky. The thought of navigating an enormous, procedurally-generated universe with this as your soundtrack could very well result in a sensational overload.
Got any favorite instrumental rock songs?