How do songwriters copyright their songs?

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Tags

1. #simple
2. #completed
3. #individual
4. #process
5. #concept
6. #write
7. #congress
8. #creative
9. #songwriters
10. #songs
11. #decide
12. #according
13. #point
14. #their
15. #songwriter
16. #formal
17. #moment
18. #library
19. #copyright