Yeah, that's right. I've never used the english word organ and because people here were talking about an orgel version from You were... on the sites before I was confused.
I never knew that in japanese the same word means music box. Cause orgel is a german word and so it doesn't make that much sense for me to call a music box orgel in japanese. I wonder why the japanese use it that way?
Anyway, I'm wiser now, so thanks a bunch to all.