Answer:
A mile from end to end, yet as close to as a friend. A precious commodity, freely given. Seen on the dead and on the living. Found on the rich, poor, short and tall, but shared among children most of all.
What is red and nailed to a wall?
My first is an insect; my second is a border; my whole puts the face in a tuneful disorder.
It's in your hand though you can not feel it. Only you and time can reveal it.
It flies when it's on and floats coming off.
If lightning strikes an orchestra who is the one most likely to get hit?