Lay of Gil-Galad
One of my favortie songs is the Fall of Gil-Galad, but Tolkien. It is part of an ancient lay of the elven king Gil-Galad, high king of both Teleri and Noldor in the second age of Middle Earth. He fell heroically fighting against Sauron in Dagor Dagorlad.
Here is how the first part goes, (the rest is unwritten far as I know:)
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 sword was long, his lance 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 rode away
and where he dweleth none can say.
For into darkness fell his star,
In Mordor where the shadows are.
My favorite version of this song is sung by Clamvadi De Profundis