Ok tiny pet peeve of mine. There is no such thing as "no copyright music" ... all music (and other creative works) are automatically copyrighted by law. Sure you can do a fancy copyright claim through the US Copyright and Trademarks office, but legally don't really need to until such time you wanted to defend your copyright in court (even then as long as you have solid evidence you created the work and can prove on which date you created it, you can defend your copyright).
For artists, like Kevin MacLeod, who legally allow people to use his music for commercial purposes ... that music is still his by copyright. What he's done is provide the music royalty-free, which means he does not require any royalty payments and/or license fees for people to use his creative works.
Sorry, just bugs me when I see people throw around the term "no copyright" or "non-copyright" all the time.
Source: A friend of mine is a copyright, trademark and patent lawyer.