FractalDVD.com has an MP3 of the original Demonstration Record for the Moog 900 Electronic Music System.

You can preview the Moog demo below.

The Microgroove 10″ vinyl disk was produced, composed and realized by Walter Carlos, as a Trans-Electronic-Music-Production.

The disk is dated, but provides an interesting historical perspective on the state of electronic music in 1968.

 

 Moog-demo [8:55m]: Play Now | Play in Popup | Download