Do you have to copyright every song?

Related questions

1. Does Shazam know every song?
2. Can you copyright a song if you don't own the beat?
3. Can you use royalty free music for commercial use?
4. Do music copyrights expire?
5. Can I search a song by humming?
6. How do I identify a song on my Iphone?
7. Do you need to credit royalty free music?
8. How Shazam identify songs?
9. Why does music player show on lock screen?
10. Is royalty free the same as copyright free?

Tags

1. #others
2. #paper
3. #write
4. #permission
5. #copyright
6. #record
7. #cannot
8. #without
9. #original
10. #protected