matchTag makes it quite easy to update the title information in your iTunes music collection and to amend the missing info. All title information is taken directly from the iTunes Store.
You have been using iTunes Match and replaced the files in your music collection with those from iTunes Match. All you need now is the correct title information for a perfect music collection. This is where matchTag comes in. It will search for this info in all iTunes Stores worldwide and copy it directly from there.
You can choose any tag you like or have matchTag replace them all.