Ok, here's the thing... ever since I was really really young I've always felt like I was being watched like either right beind me or well just far enough back that I wouldn't be able to seen anyway; but the thing is is no one was ever there. I've hurd people calling my name all the time... the names not so much anymore but it used to happen a lot but only when I go to a certain area (city, room) and now more frequently its been a buzzing noise in my ears like not too much buzzing but it's a ringing buzz its hard to explain but... here's the weird part. Ever since I've started to "talk" (answer) it goes away well I guess its because of my response because when ever I hear it now, I say I'm busy leave me alone or I don't want to hear it right now go away... and it stops. Now I don't know what to think about this because its just all weird to me because I know someone's there but there's no one there if you understand... like you can't see anyone but you know someone's with you... you just get that feeling of not being alone. But sometimes its not a relaxed feeling like I've seen shadows move around but nothing there and no light for anything to even make a shadow do what I seen, as well as well... christmas '08 my boyfriend and I went to my mothers house where she clames she has a ghost in the house because fans turn on and off and back on again when she tells "fred"( that's what she calls "it") it to turn things back on they do. But either way him and I were laying on the air mattrice in the lounge for the night and we normaly have a chat before we go to sleep and then cuddle up and nod off but this one night in perticular well... my mom has this christmas tree music thing and well she had brought it out for deoration but no one had wound the key for it to play, not even once that year and all of a sudden I got startaled because it started to play and it wasn't just the end of a jungle and finish it was a whole chours and then it stopped like it played for like 3mins and then stopped and my boyfriend wasn't sure why it had bothered me because I jumped closer towards him it really freaked me out I didn't know it was going to do that and its never done that before EVER! well the next morning he gets up to go to the washroom and I'm tidying up the matrice and we were talking though the kitching and lounge and he just goes into a stair just looking in my direction and well, he walked into the lounge and right behind me he walks to where the music box tree was and bends down to the floor and sure enough... the key to the music box wasn't in the tree... it was on the floor.

And I... crazy or do I have something to question

I think you are neither crazy nor haunted. Our brain is a random assembly of neurons and there are numerous reports of "miswirings" where neurons are connected that shouldn't be, e.g. synesthesia. That is quite common. Your feelings of being watched or noises are just that, random electrical impulses in your brain that your brain link to your consciousness while other people's brains would not. If it bothers you, see a neurologist about it but if you can just ignore it, it should be fine. But watch out for potential schizophrenia there.

The other example with the music box is nothing out of the ordinary either. It's basic probability. Since each day has 86400 seconds, if each second something happens, you should by pure mathematics expect to see something with a probability of 1 in a million happen each 20 years. And the music box might have had some energy left from a previous winding that somehow got stuck. That probability is greater than one in a million, so it's not a big deal really.

Something else that sounds bothersome to me. If you are experiencing ringing in the ears you should get checked out for that unless you have just left an environment of extreme noise. You need to get checked out. Also some people are more sensetive to electrical fields and it can cause the same feelings (being watched or someone there) so be aware of your surroundings at all times. There may be a logical explination for everything.

I agree also on the musical chime. Since you mentioned it's a wind up. Then a spring would be involved. Heat can change the tension on a spring and cause it to expand. So it going off at random wouldn't be a surprise.

I can explain the buzzing noise. It's called tinitus. It's from listening to headphones too loud, too often, screaming, or just being in a loud environment. You'll randomly hear it when you're in a quiet environment and it's caused by previous loud noises throughout the years. I have it too. You should research it, learn more. That's so weird, I just got it a little while commenting lol x)

It's spelled tinnitus*, sorry.
You can look it up on YouTube to hear it.