Music won't sync to iPhone 6?

I am having a similar problem which I did read was supposed to be fixed by apple with latest itunes update. I have an iphone 6 iOS8.1.2 and itunes 12.0.1 running on macbook pro Yosemite 10.10.01. When trying to sync my complete music library only half of the songs are synced to iphone. I have read somewhere that this is a bug caused by duplicates of purchased songs. I have checked my itunes library and there are indeed some duplicates caused by having the same songs in different albums (e.g. Best of... and original album), but I am not willing to go through the pain of trying to locate each and every duplicate if this is a bug which should be fixed. Anybody an idea how to fix this without deleting songs from the library?

Hi stell303,

I'm sorry to hear you are having issues with your iPhone/iTunes. I also apologize, I'm a bit unclear on exactly what you are seeing when you try and transfer your music from iTunes to your iPhone. If you continue to have issues syncing your music, you may find the information and steps outlined in the following articles helpful:

Sync your iPhone, iPad and iPod with iTunes using USB - Apple Support

Manage content manually on your iPhone, iPad, and iPod - Apple Support

You may also want to try transferring your purchases from your iPhone back to iTunes and making sure that that is working correctly:

Re-download or transfer your iTunes Store purchases from an iPhone, iPad or iPod to a computer - Apple Support

Regards,

- Brenden

I discovered that several song titles marked for syncing through playlist no longer appeared on my iPhone, and although they appeared in iTunes in a playlist which was included in the playlists checked for syncing, they weren't added when I clicked the sync button.

I can't say that I understand the situation well enough to pronounce it solved, but i was able to make the missing songs sync again by continuing to use "Selected playlists, artists, albums, and genres" as the only sync criteria, and removing check marks from all sync options in the artists category.

I had discovered that I had some very long entries in the artists information for some titles, and although i haven't tested thoroughly enough to proclaim that as the cause, I suspect that it was related. I think that some of the metadata had been corrupted just enough for the titles with long artist names that the sync process choked on them before finishing.

I had the same problem. Not all songs would sync to my iPhone 6. They all showed in Music but many were stuck on the Cloud and streaming didn't really work to play. Went to the Apple store Genius Bar. They couldn't figure it out either.

FINALLY stumbled on the fix. Turn off iCloud DRIVE (not iCloud backup). I don't need iCloud drive (allows various apps to access it for storage). You can select which apps can use it. I deselected all of them.

Anyhow - turned iiCloud DRIVE off and synced with iTunes again by plugging into my PC with the phone. ALL songs downloaded to my phone and are resident there now (and are still on iCloud BACKUP so safe). Music app had elected to store a bunch of songs there. It can take a little while to fully sync due to big data move but it absolutely worked.

Hope this helps!