http://www.youtube.com/watch?v=m5gEjwAQI6g
Optigan: "In the early 70’s, Mattel devised this OPTIcal orGAN to play back the sounds of REAL instruments, encoded on celluloid discs like concentric rings of movie soundtrack. The result was pretty crappy sounding and soon forgotten by the world at large...".
And yes, the sound you hear is as is...

And I feel this video goes well with this other organ one: Reyn vs Galway - Wizball [high score]
http://www.youtube.com/watch?v=n7niD6i4020
Enjoy!
Cheers, Reyn.