A fairytale with no words or pictures

Can you recognise a fairytale without words or pictures?
Probably not . So let's make a remix instead.
My 2 questions to you are

What 1 instrument would make a fairytale song into a dark fairytale song ?
What 1 instrument should be in a fairytale song ?

Let's find out if anyone agrees with my selection of instruments.
Made solely for entertainment purposes .