A question for piano players & ballet dancers...?

Question

I'm trying to find the name of a ballet/piano song.
there's no words to it, though, hah. So it's very hard to find.
I've seen it many times in movies, when people open Jewelry Boxes. &It's at the beginning of a Hip Hop song by Nas.
Sorry to be so vague, but i really need to know, and it's a very common song.

Answer 1

It's "Fur Elise", by Beethoven.

Answer 2

not too hard to find
this is my fav song to play on piano!
it is called "Fur Elise"
by Beethoven♥

Answer 3

it is by Beethoven and its called Fur Elise