What if you couldtalk to every lessonyou've ever had?

Arco records your lessons. Provides beautiful summaries. Automatically organizes and grows your interactive knowledge base.

Ask Arco Anything—it answers in the teacher's voice, backed by your lessons, centuries of pedagogy, and powerful AI. Works for all instruments, styles, and languages.

Sound familiar?

A metaphor that finally unlocks your phrasing. The exact advice that transforms your tone. The detailed walk-through of that passage you've been struggling with. Your teacher explaining it perfectly—and then it's gone.

Students leave with scraps.

Teachers repeat themselves.

Breakthroughs fade.

Not anymore.

How Arco Works

Intelligence

Not generic AI.

Arco knows the difference between Russian and Franco-Belgian bow hold—and Lhévinne's approach to piano tone production. It remembers what your teacher said about your third finger. And it's read Galamian cover to cover.

See what a lesson summary looks likeView sample

Here's what a chat with Arco looks like:

You

My vibrato sounds tight and mechanical. What has my teacher said about relaxing it?

Arco

What “tight and mechanical” actually means

When players describe vibrato this way, it almost always boils down to a few things:

Too much gripping/pressure: Thumb and side of 1st finger clamp the neck. Finger presses too hard into the string, killing oscillation freedom.
Joints not really moving: The last joint of the finger is stiff instead of “jelly‑like.”
Motion driven by “shaking” big segments: Forearm/upper arm pumping while the finger/hand are locked.
One speed, one width, on every note: Same vibrato in Mozart, Brahms, loud, soft — it feels mechanical regardless of the basic motion.

Everything below attacks these specific causes...

Even before your first recording—Arco is ready to talk. Ask anything about technique, interpretation, or artistry, drawing on centuries of curated pedagogical wisdom.

What has my teacher said about improving my vibrato?How has my intonation progressed over the past 6 months?What practice strategies did my teacher recommend for Paganini Caprice No. 1?Create a practice plan for my audition repertoire.Create a 2-hour intonation workshop based on everything I've taught.What metaphors have I used to explain spiccato?Write a post on the 5 most common bow technique problems.What was John supposed to have prepared for today's lesson?How do different historical pedagogues approach sound production?What etudes can help me with shifting?Help me create a lesson plan for my student John.I have pain in my left hand, I think from being overly tense.How does my teacher's vibrato advice compare with Galamian and Flesch?Based on my progress and issues, which exercises should I focus on?What fingering did my teacher recommend for the Chopin Ballade?How can I improve my pedaling technique?What exercises has my teacher suggested for hand independence?Create a practice plan for my Beethoven sonata.What has my teacher said about my tone quality at the piano?How should I approach the voicing in this Bach fugue?What did my teacher say about my fingerpicking technique?How can I improve my barre chord transitions?What scales should I practice for jazz improvisation?What has my teacher said about improving my vibrato?How has my intonation progressed over the past 6 months?What practice strategies did my teacher recommend for Paganini Caprice No. 1?Create a practice plan for my audition repertoire.Create a 2-hour intonation workshop based on everything I've taught.What metaphors have I used to explain spiccato?Write a post on the 5 most common bow technique problems.What was John supposed to have prepared for today's lesson?How do different historical pedagogues approach sound production?What etudes can help me with shifting?Help me create a lesson plan for my student John.I have pain in my left hand, I think from being overly tense.How does my teacher's vibrato advice compare with Galamian and Flesch?Based on my progress and issues, which exercises should I focus on?What fingering did my teacher recommend for the Chopin Ballade?How can I improve my pedaling technique?What exercises has my teacher suggested for hand independence?Create a practice plan for my Beethoven sonata.What has my teacher said about my tone quality at the piano?How should I approach the voicing in this Bach fugue?What did my teacher say about my fingerpicking technique?How can I improve my barre chord transitions?What scales should I practice for jazz improvisation?

For

Teachers

Walk in prepared, every timeNo more "remind me what we covered last time." One tap shows everything.
Turn your wisdom into workshops"Create a workshop on arm weight vs. finger articulation from everything I've taught." Synthesized from your own lessons.
Build a methodology that's truly yoursImport old Zoom lesson audio or transcripts and turn that archive into a searchable gold mine.
Share & Stay OrganizedBeautiful PDFs. All your content synced and backed up. Everything in one place.

For

Students

Review like your teacher is in the roomYour teacher's reasoning, metaphors, and step-by-step explanations.
Get unstuck instantly"What has my teacher said about rest stroke vs. free stroke?" Answers from your own lessons.
Connect your lessons to the mastersCross-reference your teacher's approach with Galamian, Neuhaus, Tárrega, and others.
See how far you've comeLook back on months of progress. Discover what's actually working.

For

Parents

Clear SummariesGet professional-looking lesson summaries you can actually understand.
Stay InformedKnow what your child has been asked to work on—without needing to sit in every session.
Track ProgressTrack trends over time: what's improving, what keeps coming back.
Practice SupportGet professional, reliable advice to help you practice with your child at home.

“A living archive of musical knowledge—deeply personal, historically grounded, always accessible.”

Violin, cello, piano, guitar, voice, and beyond. Trained to understand the unique techniques, traditions, and pedagogy of each instrument. Works for classical, jazz, and other genres. Speak any language — Arco understands automatically.

A Letter from the Creator

Dear fellow musician,

I'm Daniel Kurganov—violinist, teacher, and creator of the YouTube masterclass series many of you have followed over the years. What started as an attempt to document my lessons has led to something I never anticipated: a tool that's become impossible to live without.

For years, I've watched profound moments disappear—both as a student and teacher. The detailed walkthrough for shaping phrases in Tchaikovsky Concerto—bow distribution, articulation, and nuances of rubato. The revelations in artistic phrasing and sound production. I collected notes, recorded myself, tried every system. Nothing worked the way I needed it to.

Arco is what I wish had existed.

When recent advances in AI made this kind of system possible, I knew something like this had to be built. Between rehearsals, lessons, and travel, I started coding. Half a million lines of code later, Arco is the first tool of its kind—not just in music, but in education broadly.

Daniel KurganovViolinist & Teacher

The Team

Built by musicians and technologists

Daniel Kurganov

Co-founder, Engineering & Designer

Internationally-acclaimed violinist, pedagogue, and AI expert. Recording artist and innovator in music education technology.

Alex Kurganov

Co-founder, Engineering & Advisor

Technologist and inventor shaping how people connect through speech and AI. Holder of multiple U.S. and international patents.