Heart of ember, autumntide
Cooling swiftly, bleeding light...
The Heart of Ember is bleeding light, smold'ring softly and biding time, all of which makes me think Zodiark.
Fire as shadows clash
Forgotten footfalls engraved in ash...
More connections to the Ancients. Notice though the use of our, and other plural pronouns by Zodiark. Hydaelyn does that too, referring to both Her and the Sundered when she does. Zodiark doing it maybe the souls used in his summoning? In the launch trailer we do see a moment where the WoL converses with the souls of Ancients.
Fade away... Fade away...
Heart of ember, autumntide
Burning brightly, hot and white...
Talking about the unsundered? Burning brightly vs. cooling swiftly makes me think two different groups. "Kindred severed neverwhere" referring to the friends and companions lost after the Final Days and the Sundering, while "Sorrow's silence, we needn't bear" is the isolation and secrets the unsundered kept while they attempted to bring about the rejoining.
Stories sown along the way
Tales of loss and fire and faith
Agree with Yian and Mr Thinker here!
Dys an sohm in [Our slumber disturbed]
Rohs an kyn ala na [All my brothers wake]...
Foreshadowing Midgardsormr and the rest of his brood coming to fight? Midgard did promise to return after Omega!
Storm of blood, born from blood, of our fallen brothers...
After halting the Final Days (Thunder Stilled, oaths fulfilled), the sacrificed souls now "yearn for freedom."
Born in blood (still we forge ahead), stained in red (unto tomorrow)...
Our song of hope, she dances on the wind higher, oh higher
E'er our vows endure, and remain forever strong
Standing tall in the dark do we carry on
On wings of hope, you rise up through the night higher, oh higher
Carrying our song, cradled fast within your arms
That its chorus might ring for all
Love, love, love this part.
Hydaelyn (or Venat) joins in, celebrating the "song of hope," referring to the hope for justice and life Hydaelyn has sung about in pretty much every past theme. Vows with Sharlayan or someone else?
One brings shadow, one brings light
Two-toned echoes tumbling through time
Tumbling down to the never
Echoes of shadow and light are "tumbling down to the never" = threat may end both light and dark if not halted?
Every step we take...
Should we lose our way
Tire of all this pain...
Fearless hearts ablaze
(When the world comes crumbling down)...
As we ride again
(As you turn your eyes to the stars)...
I think this is the souls in Zodiark once again, with Emet singing the parts in parenthesis. The use of we seems to imply multiple people singing, while the Emet lines use singular pronouns like I'll or my. How or why is he singing? I'd have to break out tin foil for that!