Chord organ

The sound of the reed chord organ is somewhat similar to the harmonium or the accordion.

It was invented primarily by John M. Hanert, who was Hammond's primary musical engineer at the time.

An "Organ" section provided String and Flute sounds which were polyphonic, while a "Solo" division permitted the organist to play single-note melodies superimposed over the polyphonic "Organ" division.

The "S-100," the last revision of the "S" series, added built-in Stereo Reverberation, substituted an Expression Pedal for the expression lever used on previous models, and featured a re-styled cabinet design as well as a separate ON/OFF Power Switch (on previous models, power was turned on by swinging the expression lever down similar to the Solovox).

In addition to Magnus, Emenee,[11] Bontempi and Belcanto[citation needed] made electric chord organs.