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Web Harmonium
A free browser harmonium for Indian music learners
I built Web Harmonium because I needed to practice riyaz late at night — but a physical harmonium was too loud, and every online alternative I found was either a basic toy. So I built one that actually works for real practice. Your laptop keyboard becomes a harmonium — just like the real layout. Stack reed layers for a fuller tone. Connect a MIDI keyboard if you want physical touch. Completely free. No sign-up. Built for Indian classical learners, vocalists, and anyone who just wants to play.
Hey Product Hunt! 👋 I'm Happy — developer by day, harmonium student by night.
A little backstory: I started learning Indian classical music a couple of years ago. The harmonium is the backbone instrument for riyaz (daily practice) in Hindustani music — but I'd moved into a small apartment and couldn't play after 10 PM without bothering everyone. And carrying a physical harmonium everywhere just wasn't realistic.
Every online harmonium I found was either a Flash-era relic, plastered with ads, or just too basic for real practice. No proper key mapping, no transpose, no octave control. So I spent a few weekends building what I actually needed.
The thing I'm most proud of is the keyboard layout — your laptop's letter row maps to white keys (Shuddha swar), the number row maps to black keys (Komal and Teevra swar), exactly like you'd position your hand on a real harmonium. Took several iterations to get that right.
A few things worth trying if you open it today:
→ Press S, E, R, T, Y, U, I, O, P in order — that's Sa Re Ga Ma Pa Dha Ni Sa, the full octave.
→ Use ← → arrow keys to transpose until the Sa matches your singing voice.
→ Hit Tab to toggle reverb — makes a big difference on laptop speakers.
It's completely free, no sign-up, open source under MIT. Works offline too once you install it as a PWA.
Would love to hear from anyone learning Indian classical music, or from folks who've worked with the Web Audio API — always curious how others are approaching instrument simulation in the browser.
Thanks for checking it out. 🙏
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About Web Harmonium on Product Hunt
“A free browser harmonium for Indian music learners”
Web Harmonium was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #160 on the daily leaderboard. I built Web Harmonium because I needed to practice riyaz late at night — but a physical harmonium was too loud, and every online alternative I found was either a basic toy. So I built one that actually works for real practice. Your laptop keyboard becomes a harmonium — just like the real layout. Stack reed layers for a fuller tone. Connect a MIDI keyboard if you want physical touch. Completely free. No sign-up. Built for Indian classical learners, vocalists, and anyone who just wants to play.
Web Harmonium was featured in Music (53.4k followers), Games (98.6k followers) and Entertainment (1.9k followers) on Product Hunt. Together, these topics include over 37.7k products, making this a competitive space to launch in.
Who hunted Web Harmonium ?
Web Harmonium was hunted by Happy Sinha. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Happy Sinha