Both the English poem and it's Quenya
translation were published on the website
accessible with TTT Limited Edition Soundtrack CD and
are found in
The Annotated Score
of the Two Towers.
It is used primarily during Gandalf's
fight with the Balrog, but the word "Mettana" (to the end...) is
heard when he reappears as Gandalf the White, probably to tie the
resurrected Gandalf into his transforming experience. And snippets
of the source text was incorporated into unused music for the White
Wizard's reveal and his recount of the battle of the two Mighty
Maiar. The word
"Mettana" is also heard as he begins the battle with Saruman for
Théoden's mind.
According to the sheetmusic for the
TTT-OST track, Forth Eorlingas, the phrase, "tulta
cuiva tuolya Olórin an mauya",
is
sung by the second choir under the The Call
in the White Rider
in Nature Theme. The second choir also draws lyrics directly
from The Call as well. Since I can't determine when they are singing
The Call and when they're singing The
Fight, I don't list any instances of the
White Rider in
Nature Theme above. Even if lyrics from The Fight are used in
that music, it's not the primary focus.
