Quenya is one of the languages spoken by the Elves. It was the language that developed among those non-Telerin Elves that reached Valinor (the "High Elves") from an earlier language called Common Eldarin. Of the Three Houses of Elves, the Ñoldor and the Vanyar spoke slightly different, though mutually intelligible, dialects of Quenya (Quenya and Vanyarin Quenya (also Quendya), respectively). The language was also adopted by the Valar who also made some new introductions into it from their own original language, though these are more numerous in the Vanyarin dialect than the Ñoldorin one. This is probably the case because of the enduringly close relationship the Vanyar had with the Valar. The Third House, the Teleri, spoke a different, closely related language: Telerin, although this was by some seen as a dialect of Quenya which is untrue in a historic perspective but plausible in a linguistic one; the languages do not share a common history but are very much alike.
It was the Vala Oromë who coming upon the Elves at Cuiviénen, 'The Waters of Awakening', taught them Quenya. Over time, however, the Eldar changed the language and added to it words of their liking and softened its speech from its origins of Valarin speech. The Valar did adopt this language in order to converse with the Eldar of Valinor. The Valar in the beginning had speech.