Recognize this?
Man naeg mathal, ae maethor veren,
Erui reniol ar nimp?
I thâr pellen uin ael
Ar ú-linnar in aew.
Actually, you do know the poem of which this is the first stanza, though probably not in this translation.
There’s more poetry here, and much else about Tolkien’s languages, including downloadable courses. ((It’s oddly refreshing to see such an old-fashioned website.)) Here’s an overview of the Elvish languages.