This has to be the masterpiece of film making - Fritz Lang's Metropolis was made in 1927 - incredibly he was using some of the earliest techniques in special effects for movies - mirroring, superimposing etc, even the robot looks like something out of Star Wars.
The film was originally panned by the critics, it wasn't a commercial success in its day.
As it was made in 1927, Metropolis was a silent movie, so various music scores have been written over the years more recently by Giorgio Moroder....however the soundtrack i've used on this clip is by Quivver aka John Graham