Virtual Organ — Hammond Drawbars & Pipe Stops

A free virtual organ with two authentic engines. The Hammond mode is a real tonewheel synth: nine working drawbars (16′–1′) with foldback, a physically-modelled Leslie rotary speaker (slow/fast with realistic spin-up inertia), single-trigger percussion, scanner vibrato and chorus, key-click and tube overdrive. The pipe mode is a church organ with principal, flute, reed and mixture stops by footage, a 16′ bourdon and pedal bass, tremulant and a long cathedral reverb. Play with your mouse, the computer keyboard, touch, or any MIDI keyboard, record your performance, and share a link that restores your exact registration.

How to play the organ

1
Pick an organ type

Choose Hammond for the drawbar/Leslie sound or Pipe organ for the church sound. The controls below swap to match.

2
Set the sound

Pull the drawbars (Hammond) or switch stops (pipe), or just tap a preset like Jazz, Gospel, Plenum or Tutti.

3
Play the keys

Click, tap, or use your computer keyboard — A–L are the white keys, W–P the sharps. Shift+← → moves an octave, Space holds sustain.

4
Spin the Leslie

On Hammond, toggle the Leslie between Slow and Fast and listen to the rotor accelerate. Add percussion and a touch of vibrato.

5
Connect a MIDI keyboard

Press “Connect MIDI” and pick your hardware. Notes and the sustain pedal work right away.

6
Record and share

Hit Record, play, then download the audio — or press Share to copy a link that recreates your exact organ setup.

Play a Hammond and a church organ right in your browser

Memory
Drawbars
Leslie
Vibrato / Chorus
Percussion
Tone
Key click30%
Overdrive0%
Transpose 0
C2 — C7 Keys: C4
⌨️ A–L = white keys · W–P = black · Shift+← → = octave · Space = sustain. Organs have no touch dynamics — use Expression for volume.

Features

Real tonewheel drawbars
Nine working Hammond drawbars (16′, 5⅓′, 8′, 4′, 2⅔′, 2′, 1⅗′, 1⅓′, 1′) with authentic foldback — move them while holding a chord and the timbre changes live, just like the real B-3.
Physically-modelled Leslie
Separate horn and drum rotors with Doppler pitch-shift, amplitude tremolo and stereo pan. Switching slow↔fast spins up with real inertia (the horn accelerates faster than the heavy bass drum).
Percussion, vibrato & overdrive
Single-trigger 2nd/3rd-harmonic percussion (soft/normal, fast/slow), the scanner vibrato/chorus (V1–V3, C1–C3), an adjustable key-click and a tube-style overdrive for the rock sound.
Pipe / church organ
Principal, flute, octave, twelfth, fifteenth, mixture and trumpet stops by footage, plus a 16′ bourdon and a pedal-bass coupler, a tremulant and a long convolution cathedral reverb.
MIDI keyboard & recording
Connect any USB or Bluetooth MIDI keyboard via Web MIDI (with CC#64 sustain), then record your performance and download it as audio.
Shareable registrations
Five Hammond and five pipe presets get you started; the Share button copies a link that restores your exact drawbars, stops and effects.

FAQ

Is this a Hammond organ or a church organ?

Both. The top switch flips between a tonewheel Hammond (drawbars, Leslie, percussion) and a pipe/church organ (stops, tremulant, cathedral reverb). They are two separate synthesis engines, not one sound with a filter.

How does the Leslie speaker work here?

The signal is split into a treble “horn” and a bass “drum”, each given a Doppler pitch wobble, an amplitude tremolo and a stereo pan driven by a rotating LFO. When you switch slow↔fast the rotor speeds ramp with realistic inertia, and Stop brakes them — that acceleration is what a cheap tremolo can’t fake.

Why isn’t the organ touch-sensitive like a piano?

Because real organs aren’t. A key is simply on or off — the loudness is set by the swell/expression pedal, not how hard you press. We model that faithfully: use the Expression slider for dynamics. On Hammond, velocity only changes the key-click.

What are drawbars and the numbers like 888000000?

Each drawbar adds one harmonic of the note, labelled by organ-pipe footage (8′ is the fundamental, 4′ the octave above, and so on). Pulling them to different amounts blends the timbre. “888000000” means the first three drawbars full and the rest off — the classic jazz setting.

Does it work with my MIDI keyboard?

Yes, via Web MIDI on a Chromium browser (Chrome, Edge, Opera, Brave) over HTTPS. Note-on/off and the CC#64 sustain pedal are supported. Safari 17+ also works; Firefox needs the dom.webmidi.enabled flag.

Can I save or share a sound I like?

Yes. The Share button copies a link with your full registration encoded in it — drawbars or stops, Leslie, vibrato, percussion, reverb. Open the link and the organ loads exactly as you left it. Your last setup is also remembered automatically.

No sound when I first click — what’s wrong?

Browsers block audio until you interact with the page, so the very first tap “arms” the sound. If you still hear nothing, tap a key once more, check the Expression and volume sliders, and make sure your device isn’t muted.

You May Also Like

🎸 Acoustic Guitar 🥁 Beat Maker 🎹 Endless Piano 🎚️ Guitar Tuner 🎼 Kalimba 🎹 Online Piano 🪘 Virtual Drums

How do you rate this tool?

Thank you for your rating!
Want to share more? Leave a comment!
Thank you! Your comment will appear after moderation.
Who is this tool for?
🎵 Musicians & Producers ✨ Content Creators 🎓 Students 🧘 Wellness & Meditation
Published Updated Authors: