boughy an album and when i switched phones i did not get it
I switched to a new iPhone 6 Plus and when I switched it did not give me a cd album but it gave me others just not that one
If you mean that it's not showing in the Purchased section for redownloading then check to see if you've hidden it from there : Hide and unhide iTunes Store, App Store, or iBooks Store purchases - Apple Support
But if the album is no longer in the store, or if you've moved countries since buying it, you won't be able to redownload it, you will have to sync it to the phone via your computer's iTunes (assuming that you have a copy of it somewhere)