Skip to content
Web Harmonium

Steady reed-like drone

Shruti box online,
centred on your Sa.

Choose Sa, open the drone control, and use the steadier synthetic texture as a quiet pitch reference.

Key map & tutorial help
Keys + touch

Z stops keys

On mobile, swipe the keys sideways and tap to play. Labels show the sounding pitch.

Guided practice

Sa · Pa · Sa

Listen for the rhythm, then follow the glowing key. Practice checks note order and octave at your pace.

ESa1 beatUPa1 beatPSa′1 beatUPa1 beatESa1 beatReady
My song keys · Write, play and download

Capture the keys you play, or type a short phrase from your own notes. Each captured note starts at 1 beat. Use E:2 for a held key and _ for a rest. Touch-only notes use Western names, such as C6:2. Up to 48 notes per phrase.

Your notes stay on this device. Copying a phrase link includes those notes for its recipient.

A gentle first round

Keep the drone low. Match one note before adding speed.

Today’s target

Three clean repetitions are better than one rushed run.

Set the drone quietly

Choose the pitch you use as Sa, begin with Sa–Pa, and keep the drone below your own voice or instrument. Sa–Ma is available when the lesson or raga calls for fourth-based support.

Do not confuse shruti with this product name

In Indian music theory, shruti can refer to subtle pitch perception or microtonal positions. “Shruti box” is also the common name of a practical drone instrument; this page provides that drone function.