My iPod shuffle 4th gene. says it sync all my music but when I want to hear it, it doesn't play ...works on my iPod touch and iPad so what wrong with my iPod shuffle?

Question

The songs worked on my iPod touch and iPad

Answer 1

Your iPod shuffle has only 2GB capacity, so unless your iTunes music library is small, it is probably NOT syncing "all" of your music.  It may not be syncing any songs...  If you use automatic syncing, you may need to set up the shuffle's Music tab in iTunes.
Connect the shuffle and select it in iTunes.  There is a row of "tabs" (starting with Summary).  Select Music there.  This is the Music tab, where you tell iTunes how to sync the shuffle with songs.  Sync Music is checkmarked forautomatic syncing.
If your entire iTunes music library can fit on the shuffle, you can choose to sync Entire music library. Otherwise, you can choose to sync Selected playlists, artists, albums, and genres.  Create your selection of songs below.  For example, if you want to keep it simple, create a new regular playlist in iTunes.  Put ALL songs you want on the shuffle on that playlist.  Back on the Music tab, find and checkmark that new playlist under Playlists.
When you click Apply, your selection of songs on the Music tab syncs to the shuffle, replacing its current content.  Going forward, any library changes that are related to the Music tab settings sync automatically when you connect the shuffle, or when you click Sync.  So, if there is a playlist with your shuffle's songs, you can just update that playlist (add and remove songs) whenever you want; iTunes automatically updates the shuffle with the same changes at the next opportunity.