I'm hearing this weird sound but I don't know where it's coming from

Okay so at the weekend, I saw a picture of myself when I was seven at my holy communion dress. I thought it was really sweet as it had been put somewhere for so long and I hadn't seen it in a while.

I decided that I was going to take a picture of it using my iPhone as I would probably never see it again.

I went upstairs to where it was placed on the landing and took a photo with it. I was listening to a song whilst doing this when I heard a strange noise. At first I thought that it was my headphones or the music I was listening to but as soon as I took one earphone out I knew that it was completely the opposite.

I listened carefully and it sounded like a nursery rhyme that would play on a loop. This kept happening for five minutes.

I looked around and couldn't work out where it was coming from (I was on the landing). I ended up thinking that it was the photo itself.

I got petrified so I ran downstairs and told my dad. He followed me upstairs and it had stopped.

It really scared me though because I did end up taking both earphones out but I still couldn't work it out.

Does anyone know what I was hearing? O.O

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