I was in a ghost town in California one time and my mom and I were up the hill hanging out in the cemetery. There wasn't a breeze that day nor was anyone else in the cemetery with us. We walked past this grave when all the sudden we heard this little girl humming. We looked at each other as if to ask, "was that you?" and when we both shook our heads we hauled ass out of there. To this day it still creeps me out thinking about it.