iTunes will not remove music from iPhone... nor sync with enough space.
Everything possibly related to syncing music is unchecked (Summary>Options>..., Music>Sync Music>...,) and iTunes will confirm that I want to remove all music from iPhone, but it's still there. Right now, if you believe iTunes, the capacity bar shows "Audio 8.53 GB 331 songs" with Sync Music unchecked, but when I check Sync Music the Audio capacity on the bar slides to the left and disappears (Free 10.28 GB). Selecting On My Device>Music shows nothing either way.
This has been an ongoing/similar issue. Before this it would show more synced music capacity then actual, plus there were songs I could not remove (iCloud downloads, duplicates, U2, etc..). But I managed to correct that after searching/reading about iCloud settings etc,. and was able to manually delete/unsync manually copied/synced music from the iPhone with iTunes along with changing iCloud settings... After that, there was no music on my iPhone so I started fresh and selected a playlist. Everything seemed fine until I tried to sync/remove music. Now it's back to how it was even though no iCloud settings were changed back and all music syncing is unchecked (no playlist, no artist, no genre, no song, nothing manually copied). And even with "Convert higher bit rate songs.. to 256 kbps" checked, nothing changes with the songs that are on the iPhone. Plus when I uncheck it the Audio capacity slides to zero/left and then goes back after syncing, or checking it again afterwards. As far as the music on the iPhone now, I'm not even sure the capacity is accurate (if those songs are converted or full rez). Shouldn't they change? Here's a thought; could the problem be that I deleted the playlist from iTunes after syncing it? I'm reaching here, or rather giving up, actually gave up months ago. With each update I hope the issue would resolve itself but it hasn't been the case.
Specs:
iTunes 12.2.2.25
iPhone 4 iOS 7.1.2
OS X Yosemite 10.10.5
iPhone 4, iOS 7.1.2, null