How much does it cost to put a song on iTunes?

Related questions

1. How do I upload my own music to iTunes?
2. Does subscribing to a podcast cost money?
3. Do you get paid for podcasts on iTunes?
4. Are podcasts free on iTunes?
5. How long does it take iTunes to approve a podcast?
6. How do I put music on my iPhone without a computer?
7. Is there free music on iTunes?
8. How long does it take for iTunes to approve a song?
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Tags

1. #single
2. #shell
3. #listed
4. #price
5. #album
6. #barcode
7. #costs