[Eruhen]

Either the Lay of Gil-galad:

Gil-galad was an Elven king;
Of him the harpers sadly sing.
The last whose realm was fair and free
Between the Mountains and the Sea.

His spear was long; his sword was keen;
His shining helm afar was seen;
The countless stars of Heaven's field
Were mirrored in his silver shield.

But long ago he went away,
And where he dwells no man can say;
For into Darkness fell his star,
In Mordor, where the Shadows are.


Either that one, or Namaríë (do I really have to write it?).