Elvish

Spoken by Elves and called "sylvan" by elves themselves. this language is quite fluent and reminds foreign listeners of a song with various animal sounds mixed in, but on a subliminal level.
The elvish alphabet is often one coherent line, wich shows bumbs in such a way, that a whole book, will look like a collection of oddly specific drawings of various trees, animals and landmarks, though heavily simplified. Some even make it an artform and create beautiful elvish masterpieces. This over time made elvish the main language any artist should at least aspire to master.
Most foreigners attempting to speak elvish properly will find it difficult to immitate certain sounds, elves often are able to produce due to their elongated necks.