Music won't sync onto Iphone 4s?

I recently added music to my library, as well as deleting several songs, but when I try to sync my phone it doesn't add any music or delete the songs off my phone that I deleted from Itunes. My phone is up to date with iOS 7.0.4 and my itunes library is up to date with version 11.1.3. When i connect it it goes through backing up-preparing to sync-copying diagnostic information-waiting for changes to be applied and then finishes. Sync music is checked, entire library is checked.

Maybe restart the computer and the iphone.