You do not want clipping with music from a voice, acoustic guitar or many other musical instruments because clipping ruins the range of dynamics and makes boring sounds. All musical instruments sound unique and different without any distortion. Maybe a flute sounds similar to a sinewave when it is played softly.
I have heard a piezo vibration sensor on a piano and a drum but never on a guitar.
I have heard a piezo vibration sensor on a piano and a drum but never on a guitar.