Answer:
I have thirteen hearts but no body or soul.
Searing 'cross the pitch-black skies I scream in celebration Yet moments later my outburst through I am naught but imagination.
Two in a whole and four in a pair. Six in a trio you see. Eight's a quartet but what you must get is the name that fits just one of me.
I look like a tiny trombone
I jump when I walk and sit when I stand. What am I?
Why is the letter B always cool?