J.R.R. Tolkien created many languages throughout his life. He wrote in one of his letters that the tales of Middle-earth (The Hobbit, The Lord of the Rings, The Silmarillion, etc) grew from these languages, rather than the languages being created for use in the stories.
Tolkien also created a number of different alphabets to write his languages - Tengwar, or Feanorian letters, is the one which appears most frequently in his work.
Quenya, Qenya or High-Elven, the most prominent language of the Amanya branch of the Elvish language family. Tolkien complied the "Qenya Lexicon", his first list of Elvish words, in 1915 at the age of 23 and continued to refine the language throughout his life. It is based mainly on Finnish, but also partly on Greek and partly on Latin.
Sindarin, the language of the Grey-elves or Sindar. Tolkien based Sindarin on Welsh and originally called it Gnomish.
Sylvan, Westron, etc
These letters are used for Tolkien's other languages, such as Black Speech, and also in English mode.
Tengwar numerals are written from right to left.
Quenya pronounciation provided by Joshua Boniface
Transliteration / Translation
Elen síla lumenn' omentielvo / A star shines on the hour of our meeting
Tengwar for Quenya, Tengwar for Sindarin, Tengwar for English, Tengwar for High Valyrian, Tengwar for Hungarian, Tengwar for Icelandic, Tengwar for Portugese, Tengwar for Scottish Gaelic (1), Tengwar for Scottish Gaelic (2), Tengwar for Spanish, Tengwar for Latin American Spanish, Tengwar for Welsh