OS X 10.8 or later. This applet will create new Music track playlists based on each selected entry of a specified tag. That is, create individual playlists for each Artist, Album Artist, Album, Composer (or their "Sort" siblings), Genre, or Year.
A good companion to this applet is Merge-Delete Playlists.
A new playlist will be created for each checkmarked entry and will contain Music tracks--in this case--whose artist tag is the same as the entry. The red-colored entries are already playlists.
Perhaps Also of Interest...
downloaded 8m 32s ago
View/Edit tags of selected track(s) in single window
downloaded 17m 9s ago
Title Cap various track tags, featuring editable exceptions lists
downloaded 22m 1s ago
Delete characters from the beginning or ending of selected tracks' name, artist, album, comments, composer, or show tags
downloaded 26m 30s ago
Append user-entered text to beginning or ending of selected tag of each selected track
downloaded 42m 20s ago
Perform search-and-replace on text in your choice of tags
downloaded 1h 13m 11s ago
Set the Plays of selected tracks.