Answer:
I'm a ruler with 12 agents. Half of them work in the darkness. Who am I?
I have a frame but no pictures. I have poles but not standing up. What am I?
What has a head and a tail, but no body or legs?
I am a way to say goodbye to your sweetheart
I am the noblest musical instrument
I am your mother's brother's only brother in law. Who am I?