Him the Almighty Power/Hurl’d headlong . . . /To bottomless perdition, there to dwell — John Milton
(Although it wasn’t inspired by that quotation, it fits well with the track, in my opinion.)
This is an orchestral piece in loose ternary form (you could argue for a loose rondo form, too). There are lots of time signatures all mixed together, and often layered on top of each other. It’s scored for a Romantic-sized string section, flute, clarinet, oboe, bassoon, french horn, trumpet, timpani, tam tam, cymbals, snare, bass drum, and harp.