So I'm trying to sync my music from my iTunes (12.3.3) to my iPhone 6S Plus (9.3.1) and it just flat out won't. I'm using a Macbook Air 10.11.4. I've tried deleting all the music on my iPhone, but now when I select Sync Music (and have my Entire music library selected) all the songs show up in the audio part of the storage bar. So if I click apply, it looks like it's syncing the music at first but then it goes through it and only syncs the U2 album (and the songs aren't in the storage bar obviously). If I delete my music again, it will delete the U2 album, but the same thing happens when I try to select my entire music. I've posted screenshots (I'm Zach by the way) of what happens below. Do you guys have any suggestions on what might be going on here?