Primitive Elvish as Tolkien conceived of it in his Early Period (1910-1930 in the terminology of this lexicon). At this stage, Tolkien imagined that the Valar originally taught the Elves language, so the Early Primitive Elvish was also the language of the Valar. See Middle Primitive Elvish and Primitive Elvish for Tolkien’s thoughts on this language from later in his life.