So, I've set out to figure out, as best as possible, the lyrics for "Watch The Skies!" and "Unbroken Road", soundtracks for Skyrim which seemed to feature Dovahzul lyrics throughout. There was a thread here a-ways back wherein our community tried to figure it out. They didn't seem to get anywhere, and concluded that it was undoable. They even got in contact with Bethesda, but nothing came into fruition from that. Since I've had some measure of apparent success, I'll post my journey here.

Note: All of my lyrics are somewhere in between "mostly accurate, but with some misheard lyrics" and "that's not it at all!", but you can be the judge of that by listening to the songs along with the lyrics. Keep in mind, though, that having wrong lyrics can result in you hearing something, even if it's wrong. However, you be the judge!

I'll start with "Unbroken Road". Here are the lyrics I've been able to come up with so far (lyrics start at 3:17 in the song):

Fin zulle tey, su'um zulle tey
Nimaar lah tol so kren se mir
Fin zulle tey, zulle tey, zulle tey
Fin zulle tey, zulle tey, ..zulle tey

Pah yoriik wah grah pah do (reyliik)
Pah nust wo siiv suleyk se stin
Pah nust wo siiv suleyk, kriist daar sul
Ahrk pah nust dreh frin
Do frin, kriist daar sul!

You'll notice "reyliik" is in parantheses. It's because the word seems the most unlike what you hear in the song. I haven't found the answer to that yet. However, comma, you'll notice that there is a theme to the song. The English translation to my lyrics:

The Tale of the Tongues, breathe the Tale of the Tongues
Itself magicka that sorrowfully breaks loyalty
The Tale of the Tongues, The Tale of the Tongues, The Tale of the Tongues
The Tale of the Tongues, The Tale of the Tongues, The Tale of the Tongues

All march to battle, all (of) nations
All they who find strength from freedom
All they who find strength, stand this day
And all they do become eager
From eagerness, stand this day!

In my interpretation, the song is about "The Tongues Tale", and the Great Dragon War. The songs seems to be about gathering and inspiring Nords to march into battle against their Dovah oppressors.

Perfect? No. Cohesive? Yeah, somewhat. Next song: "Watch the Skies". 

Now THIS song is very rough, and has a lot of parts I haven't figured out yet. I've taken my current notes SO FAR and compiled them into a "Misheard Lyrics" song. See if you can find a theme to it:

Het los maar do fo rel jer
Diiv fin suleyk sos se maar
Diiv fin su yol riik suleyk
Nax nax nax nax feyn du ah

Tiid bex diiv zeymah ahrk pah zul 
Pah suleyk het suleyk
Het faas ven shaan fin tiid diiv
Fin tiid diiv suleykaar

Het los mah het los het los
Het los mah do (? ? ?)
Het los mah se wunduniik
Se un junaar pah mah

Yoriik pah zul
Hi nis het kriist hi nis kriist het
Dilos pah zul 
Pah zul het los kest

(Interlude)

Het suleyk tey pah faal lein
Se diiv fin suleyk zulle
Het los al do pah do lein
Se pah do lein se Alduin

Sos do mul het suleyk
Pah do lein suleyk zulle
Pah do lein zeymah..
Het los maar do zoor..

Het los mah do jorre jorre
Jorre du du du du du
Het los maar het los maar
Het los maar do faas koor

Daan yah daan yah
Hi nis kriist nis hi wundunne
Diiv su’um suleyk
Ah su’um suleyk los kest
Los kest!

---

And the English equivalent:

Here is the terror from the frosty rule of the East
Dragons, the powerful blood of terror
Dragons, the air fire gale power
Cruel, cruel, cruel, cruel, bane and devouring hunter

Time opens the dragon brother, and all tongues
All power here, power
Here, the fearful wind inspires the time dragon
The time dragon is powerful

Here is the terrible hunter, here he is, here he is
Here is the terror of the (? ?)
Here is the fall of the traveler
From our kingdom, all fall

March, all tongues
You can’t here stand, you can’t stand here
Deadly, all tongues all tongues,
Here is the cyclone

(Interlude)

Here is the powerful story, all the world
Of the dragons, the powerful tongues
Here is the destruction of all of the world
Of all of the world from Alduin

The blood of the strong here is powerful
All of the world: strong tongues
All of the world: the brother 
Here is the terror of legend

Here is the fall of mortals, mortals
Mortals, devour, devour, devour, devour, devour
Here is terror, here is terror
Here is the terror of fearful summer

Doom, seek, doom, seek
You can’t stand, you travelers
The dragon breath is powerful
The hunter’s breath’s power is a whirlwind,
Is a whirlwind!

So, what do you think? There are some issues, but overall, the picture of the song is quite clear.