About SonoArc
One studio for the whole life of a song: from hum to demo.
SonoArc is the all-in-one musician and songwriting studio — an instrument for the way music actually gets made today. Here's what it is, and why it's different.
What it is
An all-in-one musician and songwriting studio.
Most music apps make you juggle four or five tools and export files between them — an analyzer here, a chord finder there, a recorder somewhere else, and a persistent subscription to a cloud AI that hovers over your work.
SonoArc brings all of it into one flowing session: a real-time 32k FFT analyzer, a 16-bit Track Recorder, deterministic chord & scale tools, the Circle of Fifths, a Vocal Wizard, Rhyme Vault, Mode Forge, an async Band project engine — and The Wizard, a warm, slightly mischievous AI mentor who knows music theory, song history and craft.
Analyze
Lock onto key, mode, BPM and chords live from your microphone
Write
Shape chords, lyrics, rhymes and modes with tools that never guess
Record
Capture uncompressed 16-bit WAV takes that actually keep up
Polish
Lean on The Wizard — free, local, unlimited
Export
Push MusicXML, MIDI and PDF to notation apps, DAWs and charts
Meet the AI mentor
The Wizard isn't a chatbot bolted onto a music app.
He runs locally, alongside SonoArc itself — no cloud round-trip, no rate limit, no bill that scales with how much you talk to him. Ask about a chord voicing, a rhyme that isn't landing, or why your bridge feels flat at 2am. He's free on every plan, forever, and he stays exactly as private as the rest of your session: on your device, and nowhere else.
Why it's powerful
Depth you can feel, handed to you gently.
Power isn't a wall of sliders — it's the right answer appearing right when you need it.
Realtime analyzer
A 32k FFT analyzer watches your microphone live and locks onto key, mode, BPM and chords — no manual pitch-drop required.
Track Recorder
Capture uncompressed 16-bit WAV at your mic's native sample rate. Real recording, not a preview — clean takes you can actually use.
Chord, scale & Circle of Fifths
Instant music-theory lookup: build progressions, find borrowed chords, and navigate the Circle of Fifths with zero ambiguity.
Vocal Wizard
Find the range a voice actually lives in and the key that lands a chorus with power, not strain — producers use it to dial in an artist before the session even starts.
Rhyme Vault
Perfect and slant rhymes on demand, so a line keeps momentum across the bar line instead of waiting on a forced rhyme.
Mode Forge
Recast any progression into Dorian, Phrygian, Mixolydian and more — a fast way to reinvent a cover or catch an ear with one raised note.
The Wizard
A warm, slightly mischievous AI mentor who blends theory, song history and craft. Free to use, no per-message limits, on every plan.
Band projects
Shared sessions, members and an async version timeline so a whole band works the same song without stepping on each other's takes.
Real exports
Get your song out of the studio and into the world with MusicXML, MIDI and PDF export from every plan.
Why it's unique
Four commitments we won't trade
Everything else is design detail. These are the lines in the sand.
Your songs stay yours
SonoArc is local-first: your account, projects, lyrics and recorded audio live in your browser's local database on your own device — not on a server we control. We have no copy to lose, sell, or leak. If you delete it, it's gone, completely.
Free AI that never leaves home
The Wizard runs an AI model locally alongside the app itself — not a third-party cloud AI. It's free with no token or rate limits, works fully offline, and your conversation never leaves your device.
Deterministic where it matters
Chord Wizard, Rhyme Vault, Mode Forge and the Circle of Fifths are precise, deterministic music-theory engines — instant and consistent, with no black-box guessing. AI is a mentor, not the only brain in the room.
Built for real bands
Band projects bring the whole group into the same session with shared members and an async version timeline, so a song gets better together instead of getting lost in a group chat.
The company
Crafted by The Viginti Octo Company
SonoArc is built by a small independent team that believes songwriting tooling should be warm, private and genuinely useful — not a locked-room SaaS with your voice in the cloud and a meter running on every question.
We're shipping progressively toward a much bigger vision: a real SonoArc DAW and native iOS/Windows/Mac apps, plus cross-device sync — all while keeping the local-first, no-cloud-AI promises above intact.
Local-first
Your device, not our servers
Roadmap
DAW · native apps · sync
Team
Small, independent, music-first
Meet SonoArc yourself.
One free project is all it takes to see why local-first, free AI wins. Upgrade only when the music demands it.