Unauthorized Automatic Music Download

I have the iPhone 5 and just did the ios7 update. For some strange reason, a 50-song country album started downloading on my phone without my knowledge.

When I sync the phone with my Mac, the "new" songs don't show up in my iTunes folder or "On This Phone". I had to let all 50 songs download and then was able to manually (swiping to delete) 48 of the 50 songs.

In Settings on my phone, I turned SHOW ALL MUSIC on and then all of the songs show up again and I still can't delete them. I then I turned SHOW ALL MUSIC off and now 3 of the 50 songs show up and I still can't swipe to delete them.

Help!