Singing with high tone at a time will be able to make a really different glass. This is a natural phenomenon. This phenomenon is called scientific, in the grip of change sounds.
Singing with highs in the period of time it can cause the glass to break it. This is a natural phenomenon Scientific phenomenon known as resonance of the sound.
Singing voice, high in one moment can shatter glass, really. This is a natural phenomenon. In the scientific call this phenomenon that the requires of the voice.