- The Hammond organ was born in 1934 from the imagination of Laurens Hammond, an American engineer who wasn’t even a musician.
- The system of tonewheels and harmonic drawbars allows for creating millions of unique sound combinations.
- The Hammond B-3, launched in 1955, became the iconic instrument of jazz, rock, and soul thanks to pioneers like Jimmy Smith and Jon Lord.
- The Leslie cabinet gave the Hammond organ its signature rotating sound, now inseparable from its musical identity.
We all have in mind that warm, swirling tone that runs through tracks like Green Onions, A Whiter Shade of Pale, or Highway Star. I see many musicians discovering the Hammond organ through rock or jazz, and ending up completely hooked on this extraordinary instrument.
Behind this legendary sound lies an unlikely story: that of a clock inventor who revolutionized popular music without ever taking a single music theory lesson. The Hammond organ has crossed decades, genres, and trends, and remains today an essential instrument for anyone wanting to add soul and character to their playing. Let’s look back at a journey worth telling.
Laurens Hammond: An Inventor Like No Other
Born in 1895 in Evanston, Illinois, Laurens Hammond was above all a versatile engineer. A mechanical engineering graduate from Cornell, he invented, among other things, a car transmission system (rejected by Renault), a 3D cinema process, and especially a synchronous motor synchronized to 60 Hz alternating current — the same motor that powers his silent clock in 1928.
When the Great Depression caused clock sales to plummet, Hammond looked for a new outlet. Fascinated by the sounds of his lab turntables, he imagined an affordable electric organ for modest churches. In 1934, the patent was filed. Engineers at Henry Ford ordered six units even before production began.
The very first Hammond organ (serial number 1) did not go to Henry Ford or George Gershwin, as is often believed. It was delivered to a dealer in Kansas City to serve as a traveling demonstrator. It is now preserved at the Smithsonian Institution in Washington.
Tonewheels and Drawbars: The Mechanics of the Hammond Sound
The principle of the Hammond organ is based on a concept inherited from Thaddeus Cahill’s Telharmonium (circa 1900), but miniaturized. The instrument uses 91 tonewheels: small toothed metal discs rotating near an electromagnet. Each wheel generates an electrical signal at a precise frequency depending on its number of teeth and rotation speed.
What makes the Hammond so special are the harmonic drawbars. Nine drawbars per keyboard, each controlling the level of a harmonic. By combining them, you can sculpt millions of timbres: from a soft flute sound to a brassy register that tears through everything. It’s additive synthesis ahead of its time, and it’s what gives the Hammond its nearly infinite sonic palette.
From Churches to Jazz Clubs: The Jimmy Smith Revolution
Originally, the Hammond organ was designed for churches. And it worked: by 1938, more than 1,700 parishes owned one. But the instrument soon broke free from the nave. Fats Waller was one of the first jazzmen to take interest, followed by Wild Bill Davis. The real turning point came in 1955, when a certain Jimmy Smith got his hands on the brand-new Hammond B-3.
Smith is a special case. After hearing Wild Bill Davis play, he bought a Hammond, locked himself in a Philadelphia warehouse for over a year, and emerged with a revolutionary technique: bass lines on the pedals, left-hand chords, bebop melodies with the right hand. He literally invented soul jazz. His first albums on Blue Note, starting in 1956, were explosive. The Hammond B-3 went from curiosity to the king of jazz instruments.
Jimmy Smith’s most iconic drawbar setting? The first three drawbars pulled out on the “B” preset of the upper manual, with percussion activated on the 3rd harmonic with fast decay. This setting defined the jazz organ sound as we know it — and you can reproduce it on any modern Hammond organ.
The Leslie Cabinet: The Hammond’s Sonic Twin
You can’t talk about the Hammond sound without mentioning the Leslie cabinet. In 1941, engineer Donald Leslie placed a rotating speaker in front of a fixed horn to create a modulation effect via the Doppler effect: vibrato, tremolo, and a breath of air that give the sound a unique three-dimensional depth.
Ironically, when Leslie presented his invention to Laurens Hammond, he hated it — he wanted his organ to stay true to the classic sound. Leslie then launched his own production, and the Hammond + Leslie duo quickly became inseparable in musicians’ minds. This combination gave birth to the famous warm, rotating sound you recognize in a split second.
The Hammond Enters Rock
While Jimmy Smith laid the foundations in jazz, it was the rock of the 60s and 70s that propelled the Hammond organ to a worldwide audience. Booker T. Jones and his legendary Green Onions (1962), Ray Manzarek of The Doors, Keith Emerson with ELP, Gregg Allman… The list of converts is long. But the most spectacular remains Jon Lord, co-founder of Deep Purple.
Lord had the audacity to plug his Hammond C-3 directly into a Marshall amp. The result: a saturated, aggressive organ sound capable of competing with Ritchie Blackmore’s guitar. On Highway Star or Smoke on the Water, the organ is no longer just accompaniment — it becomes a full-fledged lead instrument. Lord invented the hard rock keyboard sound, and his influence still resonates with artists like Cory Henry and contemporary neo-soul bands.
Want to get a Jon Lord sound at home? Activate the Tube overdrive on your Hammond organ, turn off the Leslie, and send the signal through a guitar amp or a distorted amp simulation. This “organ + Marshall distortion” combo creates that distinctive rock grain.
The Hammond Today: The Legend Continues
Production of the original B-3 stopped at the end of 1974, a victim of the cost of manufacturing tonewheels. After Hammond’s bankruptcy in 1985, the brand was bought and relaunched with digital models that faithfully reproduce the behavior of the originals through modeling. Today, the Hammond range offers instruments for all profiles, from stage keyboardists to home studio enthusiasts.
The Hammond XK-5 is the benchmark of modern clonewheels. Its MTW (Modeled Tone Wheels) engine reproduces the tonewheel behavior with impressive detail: 2 x 9 drawbars, 12AU7/12AX7 tube preamp, and an ultra-configurable Leslie section. With its 73-note Waterfall keyboard and 15.4 kg weight, it offers the most faithful B-3 experience in a portable format.
For keyboardists seeking versatility, the Hammond SK Pro combines three audio engines (Organ, Piano/Ensemble, Mono Synth) in a 9.3 kg format. Ideal for switching between organ, pianos, and leads on stage without juggling multiple keyboards.
And if you want the Hammond sound in the most compact format possible, the Hammond M-Solo packs a B-3 emulation, three transistor organs (Vx, Farf, Ace), a polyphonic synth, and a Leslie simulation in just 3.6 kg. Perfect as a second keyboard or for the home studio.
Unsure between these three models? If B-3 sound fidelity is your top priority, the XK-5 is unbeatable. If you need a versatile stage keyboard that also covers piano and synth, the SK Pro is the right choice. And if portability is key, the 3.6 kg M-Solo fits everywhere. Don’t hesitate to contact our advisors to find the model that suits your playing.
An Eternal Instrument
From the workshop of a clockmaker to stages worldwide, the Hammond organ has had a journey no other keyboard can claim. Designed for churches, adopted by jazz, propelled by rock, sampled by hip-hop — it has crossed every era while staying true to its strength: an organic, expressive, and instantly recognizable sound. Whether you’re a seasoned organist or just curious, laying your hands on a Hammond is touching a piece of living musical history.
