Answer:
They can be long or short; they can be grown or bought; they can be painted or left bare; they can be round or square.
Something you carry while singing.
What has many keys but cannot open a single lock or door?
What's always coming, but never arrives?
Sometimes you feel it weigh a ton. Yet it is nothing, but somehow still there. Makes you uncomfortable around anyone, But speak its name and it's gone.
I am a rock group with four members. All dead one was assassinated.