What it sounds like, and the records to hear it on.
The Hammond organ or Hammond organ (also Hammond for short) is an electromechanical organ named after its inventor Laurens Hammond. Originally intended as a replacement for the pipe organ, it became an instrument of jazz through its use as an entertainment instrument; It was initially used in gospel music as an inexpensive replacement for pipe organs in North American churches. From there the Hammond organ spread into rock, rhythm and blues, soul, funk, ska, reggae, fusion. .