Answer:
I look like a tiny trombone
I am the word that is always spelled correctly by everyone.
I am gentle enough to soothe your skin light enough to fly in the sky and strong enough to crack rocks.
I am an odd number that become even when beheaded.
In your fire you hear me scream creaking and whining yet I am dead before you lay me in your hearth.
The answer I give is yes, but what I mean is no. What was the question?