How long do songs stay on the radio?

Related questions

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2. Why did Chris Moyles leave the BBC?
3. What is BBC Radio 1 Number?
4. Who is replacing Zoe Ball on Radio 2?
5. Why do radio stations play the same songs over and over again?
6. Can you watch BBC Radio 1 Live?
7. When was music first played on the radio?
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Tags

1. #intro
2. #doesn
3. #seconds
4. #three
5. #radio
6. #first
7. #within
8. #minutes
9. #should
10. #ready
11. #general