Is Phantom of the Opera an opera or a musical?

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Tags

1. #theatre
2. #additional
3. #music
4. #broadway
5. #provided
6. #opened
7. #lloyd
8. #lyrics
9. #together
10. #opera
11. #musical
12. #webber
13. #richard
14. #stilgoe
15. #charles
16. #majesty
17. #phantom
18. #wrote
19. #london
20. #andrew