This experience happened when I had completed my schooling and was waiting for the college to start. As it's common in India that summer holidays are spent in maternal grandma's house, even my case was the same. I was in my Grandma's house and this happened when I was sleeping alone on the terrace during the night.
It was around 1:00 am that I heard some voice calling out and I being a light sleeper I immediately woke up and was straining my ears and expecting the voice to resurface again. After few minutes of waiting I clearly heard someone humming in a very clear tone which still sometimes rings in my ears. It was like someone was in pain or was mocking, I still can't understand but the voice was very clear and I felt goosebumps hearing it. The voice increased and I felt that someone was really faking it. However, considering the time and the fact that I was sleeping 4 storeys high with no construction as high as ours, I had to conclude that this is not normal.
I was now wide awake and decided to go down to my grandma's house to sleep but I did not want to disturb anyone of their sleep, hence decided to spend the eerie night on the terrace.
I recited my religion's chants and lay wide awake on the big open terrace with the moonless sky above my head and the wind blowing peacefully. I suddenly felt a shock through my body as if some one shaking me suddenly. I immediately got up and sat on the mat. Then out of no where I very clearly saw a white form pass in front of me humming the same sound I heard few minutes before. I took my pillow and quilt and ran down and fell on the stairs and had a sprained ankle. I can't forget this experience in my life. After this incident I did not want to take chances any more. I heard some old folks say later that spirits roam around at night searching for young boys to make them as their source to communicate to the living world.
Thank God I was not the chosen one...