my music doesn't appear on my iPhone?
whenever i find myself listening to my music on my iPhone 6, i find that some of the songs i have purchased through iTunes don't appear and find myself constantly going to iTunes, on my phone, and going to my recent purchases and having to redownload my songs all over again by clicking the gray iCloud. and after a few days, my songs again disappear and i have to redo it and redownload my songs, seeing that gray iCloud AGAIN. how can i fix this problem?
iPhone 6, iOS 8.1.3, itunes