What does no copyright music mean?

Related questions

1. Is a song cover fair use?
2. Do Twitch streamers get paid for prime subs?
3. How much does a twitch affiliate make per sub?
4. Can you lose twitch affiliate?
5. What are the principles of NCS?
6. What is no copyright?
7. Can you use Twitch for free?
8. How much RAM do you need to stream on Twitch?
9. How long of a song clip is fair use?
10. Can you play music on a podcast legally?

Tags

1. #royalty
2. #royalties
3. #license
4. #means
5. #composers
6. #compensating
7. #copyright
8. #holders
9. #music
10. #think
11. #should
12. #people
13. #instituted
14. #their
15. #owner
16. #generally