About 2 weeks ago, I distinctively heard a harmonica play a few tunes. I have had some unrelated ghostly experiences in my house since my dads passing a few years ago. I've asked my family if we knew anyone who played a harmonica in our family and concluded that no one did. Also shortly after I heard the harmonica, my light bulb in my ceiling fan blew out. Strange. Does anyone perhaps have an explanation of the meaning of hearing a harmonica?

Thanks!