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MIDIFLOW
Turn any audio into editable MIDI, 100% in your browser
Hey Product Hunt 👋
Spotify open-sourced Basic Pitch, a genuinely good polyphonic audio-to-MIDI model. But the only ways to use it were installing a Python package (which fights you on newer Python versions) or their demo site, which has been stuck on "Loading file..." for a lot of people for months.
So I rebuilt it as a plain static page. The model runs entirely in your browser via TensorFlow.js, which means:
• Your audio never leaves your device — there's no upload and no server doing the work
• Free, no signup, no watermark, no file limits
• You get a standard .mid file that opens in any DAW
Hum a melody, drop in a guitar riff, or pull the notes out of an old recording.
Being honest about the limits: clean solo instruments and vocals transcribe well. Dense full mixes with drums and heavy reverb are still hard — that's the model, not the page. There's a sensitivity slider so you can tune how aggressive the note detection is, and a piano roll so you can see what it found before downloading.
Full credit to the Basic Pitch team at Spotify — it's their model (Apache-2.0), I just wrapped it for the browser.
Curious what you try it on 🎹
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About MIDIFLOW on Product Hunt
“Turn any audio into editable MIDI, 100% in your browser”
MIDIFLOW was submitted on Product Hunt and earned 0 upvotes and 1 comments, earning #2 Product of the Day. Convert MP3, WAV, M4A, FLAC or OGG audio to editable MIDI for free. Polyphonic transcription runs locally in your browser with no upload or signup.
MIDIFLOW was featured in Music (53.6k followers), Privacy (11.3k followers) and Artificial Intelligence (478.1k followers) on Product Hunt. Together, these topics include over 139.4k products, making this a competitive space to launch in.
Who hunted MIDIFLOW?
MIDIFLOW was hunted by goo gle. 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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