Adding entire musical concepts to expand vocabulary

Question

I want my language, Syn, to be as precise, efficient, unambiguous, and aesthetic as humanely possible. To do that, I think even the texture, dynamics, rhythm, and the likes should be accounted for.

As far as I know, only Mandarin incorporates changes in intonation corresponding with a different meaning of the same spoken word, but even that can be hard to notice for non-speakers.

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Are there any other languages that incorporte musical concepts?

If there are, how did people manage to use those concepts?

If there are none yet, will such a language possess an added difficulty when speaking it?

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I imagine that the native speakers of Syn would be naturally adept in tone recognition, and every conversation would seem like an a capella get-together.

Answer 1

There is a precedent for the use of a musical tone scale in constructed languages: Solresol, a philosophical language constructed in the 19th century. Some natural languages also have a whistled mode, most notably El Silbo and Pirahã.

I am not aware of a language—neither natural nor constructed—that incorporates the concept of rhythm or other musical concepts.

Answer 2

The Yllurian Spell Singing Language incorporates as part of its magical effect the use of ordinary lexicon & grammar with musical pitch & rhythm.

As a ritual language, for any given spell to be effective, not only must the text be written and sung, but the tones & rhythms must be notated as well. The text may be sung or the notes may be played upon a flute constructed to conform to the particular mode of the music.

You can read a little about the Spell Singing Language here.