iTunes Mystery Tour
“Mood” is a folder with manually-compiled playlists of tracks that fit a particular mood.
You may notice the addition of two playlists at the bottom: LCD Soundsystem and Summer Albums. The former is because I’ve lately taken to listening to all three LCD Soundsystem albums in order because I like how they work together, and the latter is a list of good music to listen to in the car during the summer. (Select it to get the list.)