For years, I've taught students to aid their high range by pulling in the gut as they leap up to a high note. I believe this works because it serves to compress the air in the lung, generating higher air pressure.
Try this: blow out with a steady stream of air against your hand. Then, suck in your gut. Notice how the air stream accelerates?
This past week, I ran across a corollary to this: lifting the chest. As you tuck in that gut, think of slightly elevating the chest. For me, the two seem to go together. I believe this is something singers do.
And so I search my mind for a visual image of that chest lift and arrive at our old friend, Mighty Mouse!
I'll bet that little dude had a killer high range.
