In my world's terms I'd call osanwë a subtle arts talent, but you all seem to have exactly and only that with very low variance. I can check in more detail but I'm not specially trained as an artist-finder.
There are three basic things that are considered subtle arts - telepathy, the most complicated, most common, and best documented, which is the basis for all mental healing and plenty of other utilities; telekinesis, which I have a little bit of and work on sometimes; and pyrokinesis, which I don't seem to have but might be able to train up if for some reason that seemed like a good use of my time. The really obvious subtle artist kids are the ones who set things on fire. Although then somebody has to distinguish them from kids with precocious arcane talents, since arcane magic can do fire too.
I can only do it with small, light things right now, and I have to concentrate a lot, but it helped with getting my hair braided.
Yeah, subtle artist telekinesis is almost never the best way to move a mountain even for the best telekinetics, even they would be better off picking up arcana if they really wanted to mess with terrain.
The subtle arts are actually called that because they can't be detected with spells that detect magic.
I only know general education level arcane magic but it's stuff like - um, the standard example is a light but I like how shady it is here and most of the other ones I remember how to do aren't very friendly because I learned them in self-defense class. Um, will I be able to get more wool here if I dip into my component pouch? There's an illusion sound one I could show you.
And then she says a couple words and claps the wool between her hands; when she separates them the wool is gone and six seconds of soft lute music play. If I were an actual wizard I could make it louder and last longer.
...I'm not sure if the answer you're looking for is 'a lute' or 'magic'.
No - I mean, that's a song I've heard before, I'm not a composer, but I wasn't grabbing it from somewhere, I was commanding the spell to play it...
The spell can't make up the song; I have to tell it what to sound like. If I made one up it could sound like that though.