How do I remove a "missing" MP3 file from my iPhone? I have an MP3 file located on my iPhone that I want to delete but am unable to find in the Music app.

The track only appears when I connect my iPhone to my Mac and go to (Devices > iPhone > Music) in iTunes. There, it shows a list of all of my voice memos and songs in my music library. I have already deleted all of the songs from my music library using (Settings > General > Usage > Music...) on my iPhone, but it did not delete the file in question. I know absolutely for certain that it is not a voice memo.

There is now a circle with an exclamation mark next to the file in iTunes, but secondary clicking on it does not offer a remove or delete option. Does anyone have any suggestions on removing the file?
Do you or have you ever used iTunes to sync the phone?  If so, try another sync.