OS X 10.10 and later only. This script will search the Comments tags of the Music library tracks for a user-entered text string and copy the track results to a discrete playlist.
Watch the video demo below.
Any tracks whose Comments contain the string "Bonus Track" will be copied to a "_Comments Search Results" playlist.
Perhaps Also of Interest...
downloaded 20m 10s ago
Title Cap various track tags, featuring editable exceptions lists
downloaded 31m 15s ago
Append user-entered text to beginning or ending of selected tag of each selected track
downloaded 32m 56s ago
Renumber playlist tracks to play order
downloaded 36m 37s ago
Renumber order of selected tracks
downloaded 53m 34s ago
Convert selected tracks and export the converted files to a new folder
downloaded 59m 44s ago
Removes leading and trailing space characters from chosen tags in selected tracks