When advertising agencies send copies of a commercial to a radio or TV station, they often include some "karaoke tracks" along with the commercials. These contain the background audio and/or video meant to be used along with the local ad.
When I was in radio in the 1980s, this often meant that we received a cheaply made, thin piece of floppy vinyl with the music background on it, for the potential use of our local clients, so they could insert their own content, and make their own ad.
I had fun with this one, using a background track from a 33 1/3 RPM floppy supplied by Honda. The fun part was finding enough quarters to hold it to the turntable as the needle dragged across it.
Have fun!
