The Eldar, or Aeldari as they were known in the Aeldari Lexicon before the fall of their lost realm, or the Asuryani (followers of Asuryan) as they refer to themselves, are an ancient humanoid alien species whose vast empire once extended the width and breadth of the known galaxy. The Aeldari Empire was without equal, and they counted themselves masters of the stars. But millennia ago, the Aeldari's overweening pride and their fall into hedonistic practices led to a cataclysm that all but eradicated their kind and led to the birth of the Chaos God Slaanesh. Despite their boundless power, the heart of their civilisation was torn out by this catastrophe of their own making, forcing the surviving Aeldari, now calling themselves "Eldar" to outsiders and "Asuryani" among themselves, to flee upon gigantic, continent-size starships called craftworlds. Now they cling to survival by a thread, fighting the horrors of the galaxy with ritualised discipline and consummate skill.
The Aeldari species has a long and complex spacefaring history, so long in fact that little is known for certain about the course of their physical evolution and early planet-bound existence. The original Aeldari homeworld was destroyed during the catastrophic collapse of the Aeldari civilisation known as the Fall of the Aeldari.
A melody or gesture made with grace and skill can elicit an intensity of pleasure which is unimaginable to a Human.
But this potential for joy is paralleled by an equal capacity to feel despair, ambition and even hatred.