Singers

Singers - are Yaraga (and Yaraga only), who have -that exact- voice characteristics that are needed to resonate with

Voice of Whole. Simply speaking, they "vibrate alike". These ones are called "Singers" and their voices - "Voices" (these are two different words in both tangan and horfa). Most of the time, it is an in-born gift, but there are exceptions from that rule... Singer's Voice has those exact characteristics that some event "somewhere" - and when one Sings, that event manifests itself in the world, as if "pulled" through.

Home-brewed science
Trick hides in resonance, "swaying" the coordinate grid of the world.

Easy to find an example in everyday uses. For instance, try pulling a car from a ditch - it is hard and might even never happen. Thus, if you start pushing it in a right rhythm along with adding some gas + car own weight - it will make it out from the ditch. Might be also called "pendulum principle".

Singers' Voices work pretty much the same way - resonating with an event, they "sway" the "grid" till their own sound mixes with that event - and this resonance stretches through both places, like folds on a curtain - till they become akin, alike. Same. One.

And event happens in both places.

Singers' Voices are always the same - every Singer has it's own Voice, unique as those traits it possess. For example, Saverdin, First Council's Voice - is thick aromatic smoke. It exists -somewhere- - and her Voice "pulls" it through into the world.

On rare occasion, anomalies among singers tend to happen as well. Some Voices are so bright, so strong and vibrant - that Singer can not even make a sound without provoking the manifestation. That is why Matarah, "Singing Lands", has a whole commune that seeks younger Singers with still dormant Voices to guide those through theirs Voices' birth. So they get lifes unspoiled - and those around them are safe.