The music factory from the title
If you insist...
The corporate overlord
Your two linemen buddies
One of the music doors, act fast if you want to get in.
An alternative selection menu
The editing interface
All clips are already edited to match the beat, so you can pretty much pick whatever you want.
Your finished video is put in a Sega CD for "testing".
You get to watch your product and then get graded on it.