How to calm baby instantly from crying

I love her smile. I found a sound
that makes her calm instantly. I have found that it only works if I do it quietly and
am calm myself. It works every time! She is a great baby and typically only cries
for a short period of time if she is tired and fighting falling asleep or has a wet
diaper. Obviously this method won't work on every baby but you will And a trick
that works for you! Enjoy!:)