"The Elvish languages of Middle-earth, constructed by J. R. R. Tolkien, include Quenya and Sindarin. These were the various languages spoken by the Elves of Middle-earth as they developed as a society throughout the Ages. " 

"Tolkien wrote out most samples of Elvish languages with the Latin alphabet, but within the fiction he imagined many writing systems for his Elves. The best-known are the "Tengwar of Fëanor", but the first system he created, c. 1919, is the "Tengwar of Rúmil", also called the sarati."

from the Wikipedia article "Elvish languages of Middle-earth"