Answer:
When I am alive, people sing. When I am dead, people clap hands. What am I?
Railroad Crossing, look out for the cars. Can you spell that, without any R's?
I am commonly abbreviated to H
What has feet and legs, and nothing else?
I am a sharp looking horse with a flaxen tail. The longer I run the shorter my tail becomes.
Of these things - I have two. One for me - and one for you. And when you ask about the price, I simply smile and nod twice.