What is the most sold song of all time?

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Tags

1. #something
2. #candle
3. #princess
4. #since
5. #singles
6. #1950s
7. #recording
8. #second
9. #tribute
10. #charts
11. #about
12. #making
13. #began
14. #diana
15. #biggest
16. #million
17. #tonight
18. #single
19. #elton
20. #selling
21. #copies