The Westinghouse Organ was a semi-polyphonic multi vacuum tubed electronic organ designed by R.C.Hitchock for Westinghouse Electric Manufacturing Company in the USA. The organ was played on a three octave keyboard and was designed to produce tones like that of a pipe organ. The organ’s debut was at Pittsburgh’s KDKA radio station in 1930.
The History of the Organ in the United States. Orpha C. Ochse
Radio News 1931, on ‘The Electrical Future Of Music.’
Electronic and Experimental Music: Technology, Music, and Culture . Thom Holmes