Hey there birand68,
It sounds like these songs that work on other devices do not playback on this iPad. I have a few recommendations for you here. First close all the apps that are running in the background:
iOS: Force an app to close
Double-click the Home button.
Swipe left or right until you have located the app you wish to close.
Swipe the app up to close it.
When you have done that restart the phone and try again:
iOS: Turning off and on (restarting) and resetting
If the issue persists, I would next backup your device to iTunes, and restore it:
iOS: How to back up and restore your content
Thank you for using Apple Support Communities.