This script will apply the same user-entered text to the "Description" tag of each of the selected tracks.
iTunes 12 no longer provides a way to edit the Description tag of tracks in the Get Info panel for a multiple-selection of tracks.
The text you enter will be applied to the "Description" tag of the selected tracks.
Edit a selection of iTunes tracks' tags in single window
Append the track number of selected tracks to Song Name
Exports and then re-imports selected tracks' artwork
Export artwork of selected tracks to parent or specified folder
Re-associate batch of dead tracks with files from selected folder
Play through each track in a playlist at your set interval