copyright rules

When you write music when do you have copyrights? you have copyrights as soon as you publish it.
How long do you have copyrights? forever
What does having copyright to music or lyrics really mean? that no one can illegally download them wihout paying
In the US what is the current year for Public Domain music? January 1st 2011
What is the difference between public domain and proof of public domain? information
-In your own words list rules for copyright music and lyrics.-

• you CANNOT reproduce the music or lyrics
• you CANNOT distribute the music or lyrics either for free, for no profit, or for profit
• you CANNOT perform the music or lyrics in public
• you CANNOT play a recording of the music or lyrics in public--even if you own the CD
• you CANNOT make a derivative work or arrangement for public use in any form