DESCRIPTION:
This video was recorded in approximately 1986.

Program:
"Kitten on the Keys" by Zez Confrey
Explanation of the Janko note arrangement, and advantages over a standard keyboard
Brief demonstration of musical passages which are difficult or impossible to play on a standard keyboard
"C#-Major Prelude" from the Well-Tempered Clavier by J.S. Bach (with slight embellishments at the end)
Boogie-woogie rendition of "Bye Bye Blackbird"

Not long after this video was recorded I concluded that a five-row Janko (with shorter keys) is more ergonomic than this four-row design. The keyboard seen here is lost, I believe.