On 14th October 1976, Electronic Music Studios (EMS) released the EMS Vocoder 5000.
This is a recording taken from a reel to reel tape designed to show what it can do.
Very popular, EMS vocoder models later provided voices for the extremely annoying Metal Mickey and (via a ring modulator) for the evil Cylons in the original Battlestar Galactica series.
Perma-permed Brummie pop genius Jeff Lynne also made extensive use of the machine, most notably on his magnum opus 'Mr. Blue Sky'.
All hail the Vocoder!