Hi my name is ***** ***** to Just Answer. I am reviewing your question and will reply ASAP.
Are these Powerbeats 2 headphones?
First reset them, use the steps here:
Then pair them again, using these steps:
Then if they still don't play we will check what's going on.
If some play, and others don't, it sounds like not all your music has been downloaded from iCloud.
On the iPod tap Settings > iCloud > Sign in with your Apple ID and the password.
Then press the Home button to go to the Home screen, and open iTunes Store.
Then choose Purchased. Then at the top tap "Not on this iPod".
On the next screen tap Download All on the top.
When it finishes downloading all your music they should all play ok.
Do you have an Internet connection for this iPod. Can you connect it to wifi?
If not you can sync your music from your computer. Let me know if you can connect the iPod to the Internet.
Ok, and can you connect the iPod to the Internet?
Do you have a wifi network you can connect to?
If not you could set up a hotspot on your phone. Let me know and I can help with that.
Ok now try the iTunes Store on the iPod.
Songs are actually large files because they contain so much data. It would be faster over a faster connection, but in general anything like music or video is much larger than a web page or document.
Do you know if this is a good wireless signal, and a good fast Internet connection?
It depends on the speed of the connection. If you are sure it's connected by wifi, and close to the router, then it depends on the speed of the connection.
Here is a chart from Apple about it:
The only reason it is downloading again is if it was deleted from the iPod in some way. There are so many ways that could have been done I couldn't say which way it was, but that's the only way it has to download them again.
DO you want premium service for this question? I couldn't do remote desktop to your phone. All I could do is phone you, if you think that would help?
Well, it will do it in batches. It will eventually move onto the next batch, until it has all been downloaded.
When it looks like it is finished, you can go back to the iTunes Store, Purchased, and check the section of purchases under "Not on this iPod". It should be empty but if not then you can tap Download All again.
You need to keep the same Apple ID to use the music you purchased on it.
Try your old password, if it doesn't work you will need to reset it here:
Ok, then you will need to use that link to reset your password *****
Did it accept your password ***** is it continuing the download of the rest of the music?
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