Song on iPhone not in iTunes
I got all songs on my iPhone, Some I downloaded from my own purchased CDs. However, My new iPad has a lot of them missing and iTunes have them greyed out. My iPhone songs all work. Lots of suggestions say to sync iPhone to iTunes. HOWEVER, I'm worried if I sync my iPhone to iTunes then it will mess up my iPhone music songs and not fix my iTunes. Not sure what take priority when syncing iTunes or iPhone. Will my current iPhone songs be safe or will iTunes mess them all up like in iTunes and iPad? If syncing isn't a safe option, then what is the best way to recover lost music on iTunes From my iPhone? Thanks
iPhone 4s, iOS 8