Answer:
Long and slinky like a trout, never sings till it's guts come out.
Each of these ends in a kettle full of precious metal and the double variety is quite awesome
I can travel from there to here by disappearing, and here to there by reappearing.
who do you think you know but sometimes you don't
I tremble at each breath of air, and yet can heaviest burdens bear.
I can only be played on a windy day
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?