On a hand-pumped harmonium, one hand plays and the other supplies the air. Most beginner problems with tone, such as a shaky sound, notes that fade or a sudden loud burst, come from the bellows rather than the fingers. A steady supply of air is the first technique worth practising.
01 How the air gets to the reeds
Pumping the bellows pushes air into the instrument, and pressing a key lets that air through a metal reed. The reed's length sets its pitch. The air only decides how strongly it sounds. Stops or knobs on many harmoniums open or close whole sets of reeds, which changes the colour and loudness of the sound, not the notes.
02 Before you play
- Open the clasp. Most portable harmoniums have a latch that holds the bellows shut for carrying.
- Sit square. Put the instrument on a firm surface at a height where your playing wrist stays relaxed.
- Open a stop. With every stop closed, little or no sound comes out even when you pump.
- Pump a few strokes first. Build a little air before the first key goes down.
03 Slow, even strokes
Use the full length of the bellows with a smooth, unhurried motion, like a slow breath. Short, quick flaps give a pulsing sound. Pumping hard gives a burst of volume and then a dip. Aim for the same speed on every stroke.
04 Pump before the sound fades
The commonest habit to fix is waiting until the air has run out. Start the next stroke while there is still air behind the note. Practise on one long held Sa. Count a slow four for each stroke and listen for a volume that does not rise and fall.
05 Using the air for expression
Once the tone is steady, the bellows become your volume control. Slightly more air gives a fuller sound and slightly less gives a softer one. Keep changes gradual. If the tone turns harsh or your pumping arm tires, ease off and rest. Short, regular sessions build the habit faster than long ones.
06 Doing this with Soloist Harmonium
The app's sampled-reed keyboard has assisted or manual bellows, so you can start with the air handled for you and switch to manual when you want to practise pumping. It also has bass, main and treble reeds, a coupler and a drone pitched to your Sa for long-note practice.
Related reading
Questions
How do you pump a harmonium correctly?
Open the bellows clasp, then use slow, even strokes with one hand while the other plays. Keep some air in reserve and pump again before the sound starts to fade, not after it has gone.
Why does my harmonium sound shaky or fade out?
The air pressure is uneven. Short, jerky strokes or waiting until the bellows are empty make the volume dip. Longer, smoother strokes and pumping a little earlier keep the tone steady.
Does pumping harder make the notes higher?
No. Each reed has a fixed pitch. More air makes it louder, and too much pressure can make the tone harsh, but it does not move the note.