From the web app:
- Find a track in the library and add two different mood tags - TAG1 and TAG2.
- Create a smart playlist from TAG1 - go to MUSIC then filter by MOOD and select TAG1.
- Click ADD TO PLAYLIST and label playlist PLAYLIST1.
- Create a smart playlist from TAG2 - go to MUSIC then filter by MOOD and select TAG2.
- Click ADD TO PLAYLIST and label playlist PLAYLIST2.
- You should now have two smart playlists filtering on different moods. Both playlists should contain the same track.
- Sync both playlists to iOS
From iOS:
- Make sure both playlists are synced to the device.
- Notice that only one playlist contains the track.