Editing Organ (music) (section)

==== Hammond ====
{{Main article|Hammond organ}}
[[file:Hammond b3 con leslie 122.jpg|thumb|[[Hammond organ|Hammond]] B3 organ,<br />with [[Leslie speaker|Leslie]] 122 cabinet.]]
{{listen
| filename = Hammond_Organ_-_Model_A_Medley.ogg
| title = Medley
| description = [[List of musical medleys|Medley]] played with a 1935 [[Hammond organ]] with [[Leslie speaker|Leslie]] cabinet
| format = [[Ogg]]
}}
The [[Hammond organ]] was the first successful [[electric organ]], released in the 1930s. It used mechanical, rotating [[tonewheel]]s to produce the sound waveforms. Its system of [[Drawbars|drawbar]]s allowed for setting volumes for specific sounds, and it provided vibrato-like effects. The drawbars allow the player to choose volume levels. By emphasizing certain harmonics from the overtone series, desired sounds (such as 'brass' or 'string') can be imitated. Generally, the older Hammond drawbar organs had only preamplifiers and were connected to an external, amplified speaker. The [[Leslie speaker]], which rotates to create a distinctive [[tremolo]], became the most popular.

Though originally produced to replace organs in the church, the Hammond organ, especially the model B-3, became popular in [[jazz]], particularly [[soul jazz]], and in [[gospel music]]. Since these were the roots of [[rock and roll]], the Hammond organ became a part of the rock and roll sound. It was widely used in rock and popular music during the 1960s and 1970s by bands like [[Emerson, Lake and Palmer]], [[Procol Harum]], [[Santana (band)|Santana]] and [[Deep Purple]]. Its popularity resurged in pop music around 2000, in part due to the availability of [[clonewheel organ]]s that were light enough for one person to carry.