My iphone has greyed-out songs that can't be deleted?

My iPhone power button won't work, so I can't restart it. The problem is that I've several problems with my phone, the first was that it won't show the Album Artwork, so I tried fixing it, one thing led to another and now it can't play any 41 songs that I guess I was supposed to un-sync in the process. I tried to re-sync and hope they'd automatically delete, but they just doubled. I don't know what to do, please help?

Go to settings -> general -> reset -> reset all contents & settings. It won't delete anything it will just restart you phone so that all the original settings will be there therefore nothing has changed, it will refresh your music library so that everything is how it should be, hope you found this useful my friend.

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