Answer:
My first is an insect; my second is a border; my whole puts the face in a tuneful disorder.
I am never quite what I appear to be. Straight-forward I seem, but it's only skin deep. For mystery most often lies beneath my simple speech. Sharpen your wits, open your eyes, look beyond my exteriors, read me backwards, forwards, upside down. Think and answer the question...
Iron on a mammal. Mammal on your feet.
What can answer in any language? What can speak without a mouth? What can sing without an ear?
Lives without a body, hears without ears, speaks without a mouth, to which the air alone gives birth. What is it?
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.