 Ilúvatar was also the only name of God used in earlier versions – the name Eru first appeared in "The Annals of Aman", published in "Morgoth's Ring", the tenth volume of "The History of Middle-earth".Eru first created a group of angelic beings, called in Elvish the Ainur, and these were co-actors in the creation of the universe through a holy music and chanting called the "Music of the Ainur", or Ainulindalë in Elvish.Eru alone could create independent life or reality by giving it the Flame Imperishable.