How to delete every song on my iPhone?

Help! I just accidentally downloaded all 500 of my dad's songs to my iPhone 5, and I don't know how to delete all of them at once. Is there a way to clear every song from my main "Songs" thing? I just want them off my phone!

The best way is to do a backup of your iphone with itunes,

and then make sure your itunes music library has YOUR music saved in it, not someone else's.

go to your device panel, music tab, tick "sync only selected media"

then do a system restore. It will reinstall iOS and all saved data.

it will remove all 500 songs.

that's it.