Answer:
Two in a whole and four in a pair. And six in a trio you see. And eight's a quartet but what you must get. Is the name that fits just one of me?
I have one door and five rooms what am i
A red drum which sounds without being touched, and grows silent, when it is touched.
I'm the source of all emotion, but I'm caged in a white prison.
What doesn't get any wetter, no matter how much rain falls on it?
I am your mother's brother's only brother in law. Who am I?