On the iPhone and iPad, you can capture any image you see just by grabbing a screenshot. Pretty much everyone knows the power+home button, or power+volume-up button combo that snaps a screenshot and saves it to your photo library. You can even crop the image before saving it, to remove surrounding distractions. But what about video? Or music? Is it possible to take a “screenshot” of the music playing on your iPhone? Or capture a YouTube video? Yes it is. In fact, you can even “screenshot” a video, and then extract the music from within. Here’s how: with screen recording.
How to “screenshot” music and videos on your iPhone

Photo: darkday/Flickr CC