The author well envokes the power of the oral tradition, and more importantly how the use of song and lyric is even more potent. It is without any doubt that the listener is affixed to the continuity of history, which also includes its culture thus encapsulating its traditions, mores, and its ethos. Fundamentaly, it speaks to the very nature of human strivings, to face mortality and challenge oblivion's pall over us.
Who will gather the smoke of the dead wood burning.
Or behold the flowering years from seas returning?
If one contrasts this to the Seafarer, and interesting divertion occurs.
Glory is humbled, honor of earth grows old and withers, as does everyman over this Middle Earth. Old age fares over him; bright face grows pale; gray haired he grieves, knows former friends, son of athelings, given to earth.
With Tolkien's Rohan, one is not navigating towards a future home, but living and dieing well in this one. The answer to the dread reality of mortality is to act heroically. Theodin's deeds were also altruistic, his sacrifice was an obligation to an act that made Rohan a land a people. Even if none are left to hear of his lay, it was not for personal glory but to act as a true noble soul.
Those who answer this call, they are the rider, he is the one sounding the horn, all will eventually go down as rain upon the mountain side, true. But all those who are commited to this virtue have lived well and truthfuly.
In Simbelmyne do we find an equally beautiful motif that compliments a stern and spare landscape. The flower is not ornate nor does it have a sensual aroma. It is a plain white flower that graces the barrow of the fallen and to the living - Evermind. It is not for nostalgia, but for the past to inform the present to know the virtues that will aid in their lives.
Believe and you will find your way
a promise lives within you now