Airtight Cup - Part 4

Now that you've tried it with a bullet mic, a cup and your own bare hands... try it now with a harp. Your goal is to play a note at regular volume and smother the harp so much that you can barely hear it. It really helps to do this in front of a mirror (even better is a dual mirror if you have it... like in your bathroom where you might have a a medicine cabinet mirror that can open, giving you the regular mirror and the open door mirror to see multiple angles). Again, flesh-to-flesh is the goal.