What's the number one selling song of all time?

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Tags

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