Why?

I am really afraid of ghosts, so when I hear ghost stories I feel big fear for a time. However I enjoy ghost stories because soon I forget the stories, and also I have never felt ghost...exept this experience.Today
I'll tell you about little strange story.

 One day in last spring, I was practicing korean drums. We did'nt have to go there, so Iwas playing drums alone. After an hour practice, I wanted to see if my dance became better or not. I decided to record myself. At first I recorded myself by digital camera. Suddenly, the camera stoped  in the middle of playing by itself. It was out of order. I was so irritated because I had to play one more time. Then I decided to record by mobile phone camera. I changed my mind, and tried again. However the mobile phone camera stopped again. It was same point with digital camera stopped. I was so afraid of that. I went to go there to practice 3hours, but I came back to home soon. I don't know why the two camera stopped at same point. Both capacity and bettery were okay. Perhaps it was caused by ghost.......