Why do songs disappear from Apple music?

Related questions

1. Which is better Apple Music or Amazon music?
2. Is Apple music free now?
3. What's available on Apple music?
4. Can you keep downloaded Apple music after free trial?
5. Does Apple still sell music?
6. Can I download music for free with Apple music?
7. Is Apple getting rid of Apple music?
8. What happens if I cancel Apple music?
9. What happens when Apple music expires?
10. Will Apple music automatically charge me?

Tags

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2. #reset
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4. #holding
5. #device
6. #button
7. #again
8. #until
9. #apple
10. #turned
11. #restart
12. #music
13. #power