What is music without vocals called?

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Tags

1. #cappella
2. #exactly
3. #called
4. #played
5. #original
6. #karaoke
7. #music
8. #backing
9. #opposite
10. #refers
11. #version
12. #looking
13. #instrumental
14. #vocals
15. #instruments
16. #designed
17. #usually
18. #singer