Online Tanpura Drone — Free Sa-Pa-Sa Reference for Riyaz
A tanpura drone is the second instrument every Indian classical musician needs. Web Harmonium ships one built-in — a continuous Sa-Pa-Sa reference pitch that runs in your browser while you play or sing. No app, no sample download, no subscription. Start the drone, match your voice or harmonium to Sa, and your ear immediately locks in.
Why the Tanpura Is Non-Negotiable for Riyaz
The tanpura does one thing better than any other instrument: it holds Sa steady. In Indian classical music every swara is defined relative to the tonic — Re is “one above Sa”, Pa is “five above Sa”, and so on. Without a steady drone, your Sa drifts over the course of a riyaz session and the relationships between swaras become fuzzy. With a drone, your ear has a constant anchor and every interval reveals its true colour.
The tanpura's magic is not just the pitch — it is the spectral richness. A well-tuned tanpura's jowari (the bridge-edge buzz) produces slow beating harmonics that shift constantly, so the drone feels alive rather than mechanical. Web Harmonium's synthesised tanpura recreates this effect with multiple detuned partials per string cycle.
How Musicians Use the Online Tanpura
Vocal Riyaz
Sing aakar, sargam, or bandish patterns against a steady Sa. The drone keeps your ear from drifting flat — the single most common practice mistake.
Raag Study
Every raag is defined in relation to Sa. Hold the tanpura while you explore a new raag's aaroh, avroh, pakad, and chalan so the character locks in.
Harmonium Tuning Check
Play Sa on the harmonium against the tanpura and adjust your tonic key until the beats disappear. Useful when you move between A=432 and A=440 references.
Group Practice
Run the tanpura from a laptop or tablet during a group lesson or kirtan rehearsal. Everyone locks to the same reference pitch with zero setup.
Start the Drone in Six Steps
Open Web Harmonium in your browser.
Click Start Playing to unlock audio (required once per session by the browser).
Open the control panel — the Tanpura toggle lives next to the metronome.
Pick your Sa key (common choices: C, C#, D for women / G, A, B♭ for men).
Press play. The drone cycles Pa-Sa-Sa-Sa continuously until you stop it.
Adjust the tanpura volume slider so the drone sits underneath your voice or instrument.
Choosing Your Sa
There is no “correct” Sa in Indian classical music — pick the tonic that suits your voice. A few common starting points:
- Women and children — Sa at C♯, D, or D♯ is typical.
- Men (higher register) — Sa at G, G♯, or A.
- Men (lower register) — Sa at F, F♯, or G.
- Western-trained ear — Sa at C gives you a direct C-major equivalence.
- Bhajan / kirtan groups — Sa at D or D♯ works for mixed voices.
Frequently Asked Questions
What is a tanpura?
The tanpura (or tambura) is a long-necked plucked string instrument that produces a continuous harmonic drone. Its four strings are tuned Pa-Sa-Sa-Sa, cycling one after another to create an undulating sonic cushion. It is the foundational accompaniment for Indian classical vocal and instrumental music.
Is the online tanpura really free?
Yes. The tanpura drone is a built-in feature of Web Harmonium — no subscription, no account, no trial. Open the page, turn on the drone, start practising.
Can I change the tonic of the tanpura?
Yes. The tanpura's Sa follows the harmonium's active tonic key. Change the tonic from the control panel to move the drone to C, C♯, D, D♯ and so on, matching your vocal range or raag requirement.
Does the tanpura work offline?
After the first load the page caches locally, but the drone requires the browser tab to stay open. For long practice sessions keep the tab active — mobile browsers may suspend audio on background tabs.
Can I use the tanpura with the harmonium at the same time?
Yes — that is exactly the intended use. The tanpura plays continuously while you play harmonium notes on top. Both engines run in the same Web Audio graph so timing is sample-accurate with zero drift.
Is this a real tanpura sample or synthesised?
Web Harmonium's tanpura uses a synthesised additive model — multiple partials tuned to the strings' natural spectrum, with slight detuning between cycles to capture the jowari resonance that makes a real tanpura sound alive.
Related pages
Play the Harmonium
Open the full instrument and play notes while the tanpura drones underneath.
Metronome Practice
Combine drone and metronome for rhythm-aware riyaz.
Record Your Riyaz
Capture your practice session alongside the tanpura for later review.
Sargam Guide
The seven swaras are defined relative to Sa — the tanpura makes that relationship audible.
Harmonium for Singing
Pitch-matching workflows for vocalists pairing harmonium and tanpura.
Raag & Tunes
Practice beginner raags against a steady drone.
Your riyaz anchor
Drone always on. Play harmonium on top. Record your session. Everything in one browser tab.
Open Web Harmonium