Answer:
I'm simple for a few people, but hard for them to hear. I live inside of secrets and bring people's worst fears. What am I?
You heard me before and then again. Afterward I die, until you call me again. What am I?
I am known for my natural tuxedo and marching
I have branches but no fruit trunk or leaves. What am I?
I plow and plow, but never sow. What am I?
I met a man on the London bridge, he tipped his hat and drew his name, in this riddle I told you his name. What is it?