By using the menu bar on the top right corner of the screenshot above, you can delete songs on i Phone i Pad or transfer songs to i Tunes/computer/another device.
Always backup an i Phone or i Pad before attempting to install system software updates.
I have an i Pad 2 (Wi-Fi) which I want to update i OS 8, so I downloaded i OS 8.1.1 for i Pad 2 Wi-Fi's IPSW.
There are reports of this update causing problems, but Apple's fixed the bug, it says.
Still, it's important to back up everything just before you make any big changes.
The update is minor enough that it did not warrant a full 10.x.x number change, but it does include an updated build number.