Answer:
I am tomorrow's yesterday and yesterday's tomorrow. What am I?
My voice is tender, my waist is slender and I'm often invited to play. Yet wherever I go, I must take my bow or else I have nothing to say. What am I?
If you drop me I'm sure to crack but give me a smile and I'll always smile back. What am I?
If a man carries my burden they will get crushed to death. Though not rich I leave silver in my track.
I have hundreds of ears but cannot hear a thing. What am I?
I will disappear every time you say my name.