Q: Music not syncing after iOS 7 update

Oh, and another thing. After several of the syncs, the iPhone has rebooted itself.... some of them taking an age to come back on!

Some smartlists updating/syncing, others not.  I added the condition Playlist = Music and now these smarlists sync correctly  ios7.0.3 and itunes 11.1.3.

I HAD the same issue syncing music, movies on all my iDevices (iPhone, iPod, iPad) here is what I did to resolve this

1. Deleted all my songs from iTunes. (just from iTunes library not to trash).

2. initiated sunc with 0 songs on my library.

3. Magic all my devices started syncing.

4. Added back all songs(drag and dropped from itunes/music).

5. Sync again.

6. Back enjoying the music.

Hope this helps.

I can't vouch for whether this proposed solution will stand the test of time, but I've managed to get back all my PURCHASED songs that were ghosted.

On your WiFi connected device (iPad or iPhone) launch your iTunes app (not the Music player app). I did not have my device tethether to my Mac, my device was logged into my iTunes account and it had an active WiFi connection.

Launch iPad iTunes ...

Purchased>Music

Select "Not on this iPad" then "Download All"

... wait for the download to complete.

Launch iPhone iTunes ...

More>Purchased>Music

Select "Not on this iPhone" then "Download All"

... wait for the download to complete.

After you sync with your Mac you'll see that for many of your "ghost songs" you have a duplicate real song -- so I do not think this is elegantly fixed. Fortunately my Playlists all still work in spite of the ghosts.

Ok, this is what worked for me.

1. First I wiped all of the music from my iPhone.  (Which had only 900 songs because everything else wasn't syncing, yet for some reason, after purging the music, my phone still had 151 songs)
2. Afterwards I opened my iPhone's settings app and logged out of iTunes/App Store.
3. Then I logged out of iCloud.
4. I logged out of home sharing as well.
5. In iTunes, under iPhone > Music I checked the "Entire music library" sync box.
6. I waited. It had about 7 steps. It did a backup and it also transferred my purchases (apps which hadn't been transferred to my mac for some reason) and then it proceeded to syncing all 2096 songs, flawlessly. The process took about 2.5 hours.

This is what solved it for me.

I have had the exact same problem since I updated my phone to IOS 7.0.3 last night. The songs were flickering and not playing on my phone, after a while my phone had deleted all the songs. Tried to synchronize my phone with iTunes, by unchecking the music first, it had saved all the deleted songs in my "others" folder. How I am going to get rid of the 15gb in that folder??? COME ON APPLE!!!!!

Has anyone figured out a full solution??? im so upset right now. i had 3,000 songs and i litterally lost more than half of them.

I have the same problems on my iPhone 4S.  Now, my partner has the same issue on his iPhone 5.  Some playlists simply won't copy.

The only workaround (after many variations of solutions tried, some offered above) I could figure out was to erase my iPhone after creating a new backup.  

Afterwards, my audiobooks, which would not copy over from iTunes to phone, copied over.  However, the new music purchased last night and the playlists supporting it, would NOT sync over.   Therefore, now I am using the 'manage music manually' feature.  I manually created the playlists that iTunes won't sync over and that worked. 

All of this after an Apple support representative hung up on me at 7 pm.   She was rather short and impatient with me when I asked her what her screen sharing tool was going to change on my computer, when a warning dialog appeared stating the representative was going to change settings on my computer.   I calmly asked her to speak to me more kindly, and I guess she didn't like that.  

Anyway, I think Apple lost a faithful 25 year customer tonight.  

Update: I even have this problem on a brand new iPad Air 128GB with iOS 7.0.3, set up as a completely new iPad.

It is DEFINATELY an iOS 7 bug. I have an older iPad with iOS 5 that did not have any problems syncing the music.

I'm a bit furious. I spent a lot of money to get big-storage devices (64GB iPhone 4S and 128GB iPad Air) and in both I cannot even put music on them, the reason I have bought those. This problem has been going on for almost 2 months. Apple, fix this fast!

Same problem here, just want to add my name to the list: latest iOS (7.0.3) does not sync my music from the latest (and not greatest) iTunes from Apple, as of this writing. Hello Jony Ive, please pay atention to these details, also, not just the shiny chamfered edges. Very annoying. It already ate too much time out of my day trying to figure out what it is.

also had the same problem, also with movies, bugging me since updated to latest ios

Same problem here, I reseted my device to the original settings but still won't sync music and actually now the music player went mad and started changing songs randomly like crazy.

APPLE PLEASE DO SOMETHING!!!

I updated iTunes and after several attempts finally got a full sync.  I have a 4s, my wife has a 5 and have had problems with both phones.  I unchecked everything which of course removed all songs, videos, ringtones, audiobooks.  Then I reset my phone and restarted my computer.  After three attempts I got everything back on both phones. Will not try to sync until Apple solves problem.  Of course Apple is no help and seems not to care.  If anyone could get the media to pick this up and run with it I'd bet Apple would have a change of heart. 

I'm experiencing the same problems.

The syncing gets to the last stage of waiting for the files to be copied and the fails. It doesn't progress any further!

I've tried unchecking all the suggested boxes, disabling the Find my Phone app, moving my music library across to desktop and copying across but none of these work.

I am hugely disappointed that my music has disappeared.

Apple, this is a shambles - please fix ASAP!

Shame that this has been going on for past month now.  I was instructed by Apple to wipe my iPhone and set it up as a new iPhone and then restore using my cloud backup.  They also had me reinstall iTunes again.  I can no longer check the sync music box, but, sintead, have to check manage music manually.  I used to be able to have both boxed checked and now I have to drag and drop music files over to the iPhone.  I call that a workaround and it is embrassing that Apple has not stepped up an admitted they have an issue.  We did not ALL start epxperiencig this problem at different times.  Seems to have occured with the new iTunes and 7.0.3 to me.