Answer:
I'm a word that is not even strange. What am I?
I have 24 keys but cannot open any locks. Sometimes loud sometimes soft
I belong to everyone. Sometimes make you happy, sometimes make you sad. I will never end until the day you do. What am I?
I make things short but I am pretty long myself
The time between daylight and darkness when blood drinkers like to come out
No matter how little or how much you use me, you change me every month.