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.
Perhaps Also of Interest...
downloaded 7m 46s ago
Apply selected CD's CD Text to its disc and track tags
downloaded 42m 31s ago
Export selected playlists as individual XML or M3U files
downloaded 48m 48s ago
Sort purchased tracks into discrete playlists by name or Apple ID
downloaded 51m 26s ago
Two scripts copy text from clipboard to current or single selected track's lyrics tag
downloaded 1h 9m 52s ago
Displays the Spotlight meta-data for a selected track in Text Edit
downloaded 1h 15m 27s ago
Re-associate batch of dead tracks with files from selected folder