I had this weird problem bringing music into my iPod.. normally, all tracks of an album are grouped together, but for this one album, it fragmented over several albums.
I examined the orphaned tracks and could not see anything out of the ordinary when I used MP3Tag: they looked identical to the others. Even looking at the tags with Windows Explorer, they looked the same.
Then something caught my eye: in iTunes, the orphaned tracks had a different artist listed under the artwork! When I went back to Windows Explorer, I noticed something different: when I hovered the mouse pointer over the file, it showed something called "album artist" near the bottom (ref: screencap ) - yet, when I opened Properties for the file, I never saw this, nor in MP3Tag.
Sooo.. how the heck does one change this 'album artist' tag?
In my case, I was able to fix it directly from iTunes with the Get Info box, but surely there is a way to change this with MP3Tag?