Here’s one for the “How on Earth did nobody think of this before?” files.

Video Star for iOS facilitates the creation of homespun music videos to go along with any song on your device. To use it, you simply choose a song from your music library and start shooting. You can act along with the song, lip sync, dance, shoot video of your dog, or whatever.

Video Star is free for iPhone, iPod Touch and iPad. Only effects like “Crazy Party,” “Split Screen,” and “Advanced Auto Stop” (for jump cuts and timed-stop motion effects) will cost you. They’re $1 each, if you decide you’re so into making music videos that you want to add some next-level touches. And plenty of effects are included for free.