Keyboards were not easy to come by as electric components. This keyboard was the manual from a Conn electric organ recovered from a fire and found in the rafters of a pipe and reed organ manufacturer in Hicksville, NY. The keyboard scanner is built from discreet logic producing a monophonic last-note-played algorithm. The circuits were all hand-wired on prototype boards. The sound-producing technology is primarily based on a suite of chips manufactured by Solid State Micro Technology (SSMT).
The Duck was sitting in a unheated warehouse in Albany, NY for many years. It's now in Milford, MA, somewhat reconditioned, almost all keys are playable, and most of the sound-producing circuitry is working, although in a very temperamental state since many of the solder joints and switches and potentiometers were degraded through the years.
What does it sound like? In 1986 over two weeks I created these fragments. The equipment stack included the Duck, Ensoniq Mirage, Roland (I think Juno-60) and a drum machine. Mixed on a Peavey board directly to cassette tape.