How to delete music from your iphone 4?

When I go to the settings it says I deleted the songs but when I click on the music app all of the songs are still there and they play, I try to swipe left so that the delete button will pop up but it doesn't.

Make sure you really want to delete all the music because they can't be restored afterwards.

1. Open General Usage in Settings.
2. Wait for iOS to load all the apps that take up the storage of your iPhone/iPad.
3. Find and select Music from the list.
4. You'll see All Music in the list. Tap the Edit button on the top right, and choose to delete All Music.