Web Harmonium is a free online instrument with keyboard shortcuts, MIDI support, Sargam + Western labels, and controls for transpose, octave, reeds, and reverb — all on a single page.
Audio engine, MIDI detection, keyboard mapping, and all controls live on this one page. No popups, no paywalls, no redirect.
Preparing the browser audio engine, harmonium sample, and MIDI detection.
Web Harmonium is a free online harmonium keyboard that runs in your browser — no app to install, account to create, or file to download. Open the page and start playing Sa Re Ga Ma.
It is designed for Hindustani and Carnatic vocal students, bhajan and kirtan singers, music teachers running remote lessons, and anyone learning Indian classical music for the first time. Use it on a laptop, tablet, or phone whenever a physical instrument is not nearby.
Use the laptop keyboard, tap the on-screen keys, or connect a compatible MIDI controller.
Read Sargam and Western note labels directly on the keyboard while you practice.
Transpose the tonic, shift octaves, add reverb, and layer reeds from one screen.
There are no popups or paywalls between opening the page and playing your first note.
A harmonium keyboard is laid out like a piano, but Indian classical musicians commonly read it through Sargam: the seven-note system at the foundation of Hindustani and Carnatic music. The example below uses Sa = C♯, matching the introductory scale shown on this page.
| Sargam | Western note | Meaning |
|---|---|---|
| Sa (षड्ज) | C♯ | The tonic — the base note used to tune the scale. |
| Re (ऋषभ) | D♯ | The second note of the scale. |
| Ga (गान्धार) | F | The third note of the scale. |
| Ma (मध्यम) | F♯ | The fourth note of the scale. |
| Pa (पञ्चम) | G♯ | The stable fifth, often used with Sa as a drone anchor. |
| Dha (धैवत) | A♯ | The sixth note of the scale. |
| Ni (निषाद) | C | The seventh note, leading back toward Sa. |
| Sa′ (तार षड्ज) | C♯ | The high Sa, one octave above the tonic. |
The seven pure notes are called Shuddha Swar. Indian music also uses five altered notes: Komal Re, Komal Ga, Tivra Ma, Komal Dha, and Komal Ni. Those changes help give Ragas such as Bhairavi, Yaman, and Kafi their distinctive colors.
The live instrument prints the correct shortcut on every white and black key. Use those labels as you play, then open the Harmonium Notes guide for the complete keyboard map, Shuddha and Vikrit references, and the 10 Thaat system.
Your computer keyboard becomes a full harmonium. Use the mapped rows to play across the visible range without reaching for the mouse. Every on-screen key displays the shortcut that triggers it, so you can learn the layout while you play.
Connect a WebMIDI-compatible USB keyboard and use real keys for longer practice sessions and more natural playing. The MIDI panel shows whether your browser supports the feature and lists each controller it detects.
Shift the harmonium in semitones until Sa sits comfortably in your vocal range or matches another instrument. Transpose changes the sounding pitch without forcing you to relearn the keyboard pattern.
Move between lower, middle, and upper registers, then combine octave and transpose controls to cover a wider range. This is useful when a phrase moves beyond the keys currently visible on a small screen.
Add room ambience and layer extra reeds to create a fuller tone inspired by a traditional multi-reed harmonium. Keep the sound direct for close practice, or add depth when rehearsing a devotional or ensemble part.
Open the page and play immediately. There is no account, app download, paywall, or onboarding flow. Your controls remain together on one page, making it easy to return for a short warm-up or a focused practice session.
Start with the controls at their defaults. The goal of your first session is simply to connect each Sargam syllable with a visible key and a sound.
Return to the instrumentWeb Harmonium loads in any modern desktop or mobile browser. No installation or account is required.
Press the computer keys shown on the instrument, tap the on-screen keys, or connect a compatible MIDI controller.
Follow the Sargam labels across the keyboard, begin slowly, and repeat the ascent and descent until the pattern feels automatic.
The hand-pumped harmonium developed from European free-reed instruments and took on a distinctive form in South Asia during the 19th century. Indian musicians adapted the instrument to seated performance, and its sustained tone made it a practical partner for vocal music.
By the early 20th century, harmonium accompaniment had become closely associated with Khayal and Thumri, bhajan and kirtan devotional singing, Qawwali, Ghazal, regional folk traditions, and film composition. Its steady pitch can support a singer, outline a Raga, or hold a phrase while a student listens for intonation.
The instrument follows the singer, supports the Raga, and provides a stable pitch reference.
Portable accompaniment helps lead communal devotional singing and repeated call-and-response phrases.
Its warm, sustained reed tone supports poetry, improvisation, and powerful vocal lines.
Musicians across South Asia use harmonium to teach melodies, sketch songs, rehearse, and compose.
An online harmonium makes that practice available without an instrument purchase, maintenance, or dedicated space. Whether you are studying at home, teaching remotely, or checking a melody while traveling, you can open the browser and work through Sa Re Ga Ma immediately. For a deeper introduction, read what a harmonium is and how it works.
Yes. Web Harmonium is free to use, with no sign-up, credit card, trial period, or software download.
Press the computer keys printed on the on-screen harmonium. Each visible key shows its keyboard shortcut and Sargam label, so the live instrument is always the authoritative map.
Yes. Open the page in a modern mobile browser and tap the on-screen keys. The layout scrolls horizontally on smaller screens so every key remains reachable.
Yes, when your browser supports WebMIDI. Connect a USB MIDI controller, grant browser access when prompted, and choose the detected device in the MIDI control.
No. The instrument runs in your browser with the Web Audio API. Bookmark this page and return whenever you want to practice.
Web Harmonium works in current versions of Chrome, Edge, Firefox, and Safari. Chrome or Edge is recommended when you want WebMIDI support.
Reverb adds a wider room-like tail to the harmonium sound. Leave it off for a direct practice tone or switch it on for more ambience.
Learn the note system in depth or move into guided exercises with listening, score-following, and phrase-by-phrase practice.
Bookmark this page with Ctrl+D on Windows or Cmd+D on Mac.
