Hey Feeerrrrrrrnnnnnnnneeeeeee~? <3 From one con-lang nerd to another... can we have a more literal, word for word translation of the Old High Sylphic part of the song?
Ula menida tula oh (Hoary Arbor, Lord of Light)
Tela omnida tula ei (Thine advent quelleth creeping night)
Ona ramuhda deme os (The wicked burn, their pyres bright)
Nola tulama tela ei (Smote by Levin's blinding might)
The grammar seems like it might be really interesting to me - it looks vaaaaguely like Swahili in structure? Although that may be completely off-base - but I'm pretty sure this is a /really/ flowery adaptation of the Old High Sylphic, to fit with the tone of the rest of the lyrics. The reason I'm actually interested, though - aside from being a conlang nerd - is...
...what does 'Ona Ramuhda' mean? It's the name of the SMN book that the Lord of Levin grants us upon defeat, so somewhere in that stanza is a concept in Old High Sylphic that'd be applicable to the name of a Primal Weapon. Maybe "Levin's Might"?
Which then sent my mind down a really interesting garden path, especially when I read another stanza of Thunder Rolls...
"Soul without a name", eh? Does Ramuh have a name for himself, or is he simply called Ramuh because... that's the archaic Sylphic word for lightning? Did all the Primals acquire their names simply from their associated beast tribe's name for whatever physical phenomena they embodied? This is a bit of a spitball - we know a fair bit about the linguistics behind the beastman tongues, and the other Primal names don't really seem at a first glance like they could have come from the archaic versions of their beast race's tongues, but languages shift like CRAZY over time...
...all of which is potentially null and void if the Sylphic lyrics just refer to Ramuh as Ramuh because, you silly cat, that's his name, and it's just translated as Lord of Light or Levin or something to fit the tone of the rest of the lyrics / Ramuh's archaic speaking style. (Which - well done! I'm a stickler for usage of archaisms and even when hearing Ramuh's lines spoken, his conversation flowed really naturally despite being in a very formal and archaic register. That's not easy to do, and I'll doff my new Amon's Hat to you as soon as I pry it out of his cold dead hands...)
Edit: I'm a complete idiot and misread the lyrics in my excitement; 'soul without a name' refers to /the Warrior of Light/, which is... just as interesting, but in a wildly different way...