when iphone 4s is opened music app is on will not shut off.
What do you mean by "the music app will not shut off"?
If you double click the home button and then press and hold on the Music App at the bottom of the screen, a little minus icon appears. Click that and it will close the Music App.
As long as the Music app is not playing music, it's as "off" as it needs to be.
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