They were not thinking about music clearances for home video in 1978, any more than the producers of Heavy Metal were in 1981. That film took 15 years to come out on video.

And even the Making of Star Wars has been altered. William Conrad's narration was inexplicably replaced on the 90's VHS.

What's really troubling about THX-1138, is the changes are never talked about on the DVD. There aren't even restoration credits like the SE's all have.

You'd think all those ILM guys would want a screen credit for the new shots. Unless the people who animated that sex machine in THX's apartment are too ashamed! ;)

In the documentary, Lucas talks about filming in various locations around San Francisco to create his underground world, while a shot of a CGI cityscape is shown. That baked my noodle!