Answer:
I have Eighty-eight keys but cannot open a single door.
I always run but never walk often murmur but never talk have a bed but never sleep has a mouth but never eat.
I can only be played on a windy day. What am I?
I am used when you jump off a bridge for fun.
I encourage people to run home and steal
I am a rock group with four members. All dead one was assassinated.