I have an iPhone 5s using iOS 8.1.2, not jailbroken. I don't store a lot of music on my phone, but today I wanted to delete the albums that I had added, and am going to put some new music on. I sync with iTunes, so I uncheckmarked everything that I didn't want and performed the sync. It worked perfectly, except for one remaining song from one album. It doesn't show up in iTunes, and I can't swipe-delete it from my phone - the swipe doesn't work. I'm not doing any syncing to iCloud. I did try a hard reset. Any ideas?