Learn how to break a glass with your voice

You've seen it done before. Some soprano sings a high note and it shatters a wine glass. What I didn't know is that most anyone can learn to do it. It seems you need a thin glass next to your face and a long, loud (over 100 decibel) note to start. That's dangerous. This video shares an alternate way using a microphone, amp and a drinking straw.

(Holy Kaw!)