You can listen yourself and consequently work much better on your Sound Timbre.
You can easily attach your microphone and your mute.
Using SelfieSound you will tire less and get more breath.
Listen yourself, have you ever done it?
There is only one way to understand SelfieSound, which is to try it.
I am using Enrico Guastalla's "Selfie Sound" I must say that it is also excellent for studying. I recommend it to everybody.