MUSIC
Has anyone had trouble with the Apple Music
you play one song and when it is finished it doesn't play the next song after it goes to a different song all together
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You might have shuffle turned on
Play an album, playlist, or set of songs, then open the Now Playing screen and scroll up.
Tap 
Shuffle to turn on shuffle. The music plays in a random order. Tap Shuffle again to turn off shuffle
for more info: https://support.apple.com/en-us/HT207230