Syncing incorrect / wrong music - 4th generation iPod shuffle

I have a 4th generation iPod shuffle syncing with iTunes 12.1.0.50 on a late-2013 27-inch iMac running OS X 10.10.2.

The iPod shuffle is set to sync three playlists from iTunes that combined take up less than the 1.88GB of space available on the iPod shuffle.

As far as I can tell, all the tracks sync fine except for two. I have a classical music playlist and in the playlist there are two tracks for a viola concerto by Vanhal, but when I sync the playlist, it syncs two tracks for a viola concerto by Telemann. If I open the playlist on my iMac and play those two tracks, the Vanhal concerto plays, so iTunes is seeing the correct tracks. However, when syncing, it syncs the incorrect tracks.

I have tried deleting the playlist from the iPod shuffle and re-adding it. I have restored the iPod shuffle and re-synced everything from scratch. Still the same problem.

Does anyone have any ideas? Any help would be greatly appreciated.