This happened about 3 years ago when my wife and I were not yet married but she was living with me. We had just settled down to sleep and we both were tired I can tell you. My head might have been on my pillow for 30 seconds when I heard an old fashion music box. This struck me as odd since I have never owned one and have only heard it in movies or tv. I assumed it was just in my head as I was tired and dream was coming on but I asked my wife (gf at the time) if she heard that and she said yes "what was that"?. At this point I was totally perplexed so I got out of bed and turned the lights back on. I knew I did not own a music box and frankly had never even seen one in person except maybe when I was real young at my grandparents place. Either way the second I got up in stopped and I looks around the whole room, I'm not sure why but I did. To this day its the strangest thing that has happened to me and my wife.