Answer:
You're brain hears the soothing sound and as it goes with it. And as its doing that your ears hear if you're doing it right or not. While you use your voice, your brain knows how to do it. and its easy for the brain to know that it used hearing, and voice.
Explanation:
Hope that helped, My original answer! Please give brainliest! :)
Maybe just to have a different sound? I'm not really sure.
Saturated color is not one of the elements
