This is the sound of a patient in the psychiatric hospital opening a door to discover something behind it...

Door Opening

The other patient has stopped singing and the one listening gets worried that they were seen and slams the door shut...

Door Closing

Suffering from paranoia, the patient begins running away from where he heard the singing and slows down once close to his room

Foot Steps

The patient is breathing quickly and heavily in a panic as they enter their own room and they try to calm their breathing 

Breathing Heavy

The patient discovers behind the door the voice of another patient who is singing in order to cope with their distress... The patient's breathing and shuffling around is evident while they listen nervously from the door

Monika1209