What I many times hear is the sound of the cd spinning up to play when the alarm's about to go off. I have a pathological fear of being late and most mornings, I'm awake before it tells me to be.
When I've had the good fortune to sleep through the night without interruption, what I hear is the Eurythmics song Savage. Nobody sings it like Annie:
Words of power are killing me
While the sun displays its teeth.
All mockery is laughing
All violence is cheap.