Organ and harmonium, free in your browser

Virtual Organ

Play organ online with a mouse, a touchscreen or your computer keyboard. Pick a sound, then press any key. Sound starts with your first press.

Sound
Standard OrganHarmonium

How to play

Three things to know

  • Mouse, touch or pen

    Click, tap or use a pen on any key. On a touchscreen, several fingers play a chord together.

    With a mouse, the keys show their computer-key labels.

  • Computer keyboard

    The keys match the full app: t plays middle C, and Shift plus a key plays the black key just above it, so Shift+t plays C♯4.

    The labels on screen show the key for each note. Typing in a field, or holding Ctrl, Alt or Meta, plays nothing.

  • Range

    The keybed shows one to three octaves, depending on the width of your screen: C4 to C5 on a phone, and up to C3 to C6 on a wide screen.

    Only keys shown on screen play.

The two sounds

Standard Organ and Harmonium

How each instrument makes its sound, with sources.

Organ

Air through pipes

Organ pipes sound when pressurized air passes through them, and an organ's stops choose which sets of pipes sound. Each pipe sounds a single pitch, so a set of pipes, called a rank, has one pipe for every note, and a longer pipe sounds lower. Hands play the keyboards, called manuals, and most organs add a pedalboard for the feet.

How organ pipes make sound (Wikipedia)

Harmonium

Air across reeds

A harmonium is a reed organ: air from its bellows makes thin metal reeds vibrate. It pushes that air with pressure bellows; the American reed organ draws it through with suction instead.

How reed organs and harmoniums work (Wikipedia)

Both sounds here are sampled, so there are no stops or bellows to set. Play the same chord on each to compare them.

Before you play

Questions, answered

About playing here, and what the full app adds.

Back to the keys