Turn on the "Select Venue Screen" option, then go to the "Modify Game" menu and select the "New Venues Only" option. Begin in Quickplay mode and select a song. A "Video Shoot" option will sometimes appears at the top of the "Select Venue" menu. Press Up to display it. These options will be "Indie Genius Video Shoot", "High-Budget Video Shoot" or "Film Student Video Shoot". Select one of them to play with the corresponding alternate background.