Parse the selected iTunes tracks' Song Names such that the same first Item text in "First Item - Second Item - Third Item" is removed and copied to another user-selected tag in each selected track (Album, Artist, Composer, Genre, Grouping, or Comments), leaving "Second Item - Third Item" in the Song Name. Run the script again to similarly remove and copy "Second Item" to another tag, and so on. Read Me explains more, and how to customize for different separator characters. Screenshot speaks volumes.
Perhaps Also of Interest...
downloaded 11m 37s ago
Batch-append text to comments
downloaded 16m 50s ago
Set choice of various number tags of selected tracks incrementally
downloaded 42m 17s ago
Batch-change the Album Rating for the albums of selected tracks
downloaded 57m 33s ago
Display, create text file listing info of dead tracks
downloaded 58m 41s ago
Locates pairs of track entries pointing to the same file
downloaded 1h 6m 10s ago
Enter text for the selected tracks' Long Description tag