#5
Unique. A thirty nine minute, six movement, completely electronic, instrumental piece. There are no vocals, drums, or guitars on this album.
 
Not one of the earliest, but definitely one of the best.  Recorded over a period of eight months using a variety of analog synthesizers set up in the kitchen of the composer’s apartment.  Many interesting ‘sound effects’ are created on the EMS VCS3.
Oxygene
Jean Michel Jarre
1977