Answer:
A single syllable do I claim black was my most famous name; Fetal to mortals here below thousands have I slain in a single blow.
I'm at the head of an elephant and at the tail of a squirrel
I can be swallowed But I can also swallow you.
What runs around a soccer field, but doesnโt move?
I cannot be felt, seen or touched. Yet I can be found in everybody. My existence is always in debate, yet I have my own style of music. What am I?
I have a ring but no fingers. I used to stay still all the time but nowadays I follow you around.