Why do people lose their accents when they sing?

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Tags

1. #neutral
2. #their
3. #speak
4. #simply
5. #pressure
6. #vocal
7. #nutshell
8. #singers
9. #accent
10. #other
11. #american
12. #fairly
13. #accents
14. #which
15. #chords
16. #generic
17. #singing
18. #because
19. #british
20. #phonetics