What defines a blues song?

Related questions

1. Who created contemporary R&B?
2. Who was the first R&B singer?
3. What is R&B classified?
4. When did funk die?
5. What is the difference between jazz and blues?
6. Who created the blues?
7. What makes R&B R&B?
8. What made the blues popular?
9. Why is it called soul music?
10. What do you call a songwriter?

Tags

1. #success
2. #lament
3. #musical
4. #songs
5. #dance
6. #blues
7. #american
8. #injustice
9. #celebrates
10. #traverses
11. #whose
12. #music
13. #expressed
14. #longing
15. #emotions
16. #raucous
17. #loves
18. #african
19. #range
20. #feeling
21. #verses
22. #express
23. #money
24. #styles
25. #better
26. #pleasure