Questions about copyright?

I am currently working on a song and when finished I would to copyright it. However, the problem is that I don't know how much it costs. I keep hearing from other people that it's $35.00. But then I heard that it's $55.00 for the registration fee. But what I want to know this? Is the $35 just for... show more I am currently working on a song and when finished I would to copyright it. However, the problem is that I don't know how much it costs. I keep hearing from other people that it's $35.00. But then I heard that it's $55.00 for the registration fee. But what I want to know this? Is the $35 just for the song itself or is everything just $55.00 once when you pay for the registration fee? How does copyright work? Thanks! I will award a best answer with a 5 star rating along with a like.
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