Where does the ability to play scales come from?

In fact, it is quite easy to control the pitch with the tongue, mainly by feedback adjustment. If the pitch is too low, the volume of the air cavity will decrease, and vice versa, until the pitch is accurate. This process sounds very long, in fact, it is just like reaching for something: although people directly locate objects through their eyes, they still can't find them after closing their eyes, and they still use their eyes when actually taking things-> Brain->; Hands are controlled in a closed loop, but we can still keep a coherent movement when we take things, and whistling is also ok. Using this principle, I can stick my tongue to the root of my jaw, adjust the degree of protrusion of my tongue, play a song with the hiss of the tip of my tongue, or control the nitrogen gun to blow into my mouth to make music, or cover my ears with my hand and hear noise (the sound of the sea? ), by controlling the volume of the air cavity surrounded by the palm and ears, and controlling the frequency spectrum of noise to listen to songs. With the muscle memory after proficiency, this feedback adjustment is not particularly needed, just play a note directly.