domestic dispute

I live underneath my landlord who lives with her boyfriend and they fight all the time. He is a smoking contractor and she is a meditating, mantra chanting lady. They just woke me up with their yelling and eventually her crying and he must have stomped around in his work boots for about an hour which is why I'm up before my alarm clock. This is not the worst living situation I've been in by far but i can feel the negativity seeping through the floorboards and into where we live. I'm really starting to hate living in this house because of all this fighting which happens on a weekly basis and usually wakes me up in the morning or interrupts my evening. Good thing I signed a year lease, how do you tell your landlord that you want to move out because you've heard her sobbing one too many times?