♪ Op. 23Klangio Transcription StudioMade in Germany PDF · MIDI · MusicXML · GuitarPro

Audio in,
sheet music
out.

Klangio is a research-driven AI music transcription suite from Karlsruhe, Germany. Drop a recording or paste a YouTube link — the AI returns sheet music in PDF, MIDI, MusicXML, and GuitarPro with polyphonic, multi-instrument notation. Built around instrument-specific models for piano, guitar, voice, drums, and full ensembles.

Open the studio How it works
Polyphonic · multi-instrument YouTube link input 4 export formats Edit mode built in
How it works

Three movements. One score.

No DAW install, no signup wall on the first transcription. Drop an audio file, paste a YouTube link, or record from the mic. Klangio's AI returns notation in seconds — refine in Edit Mode, export to your notation software of choice.

I.

Choose the app

Pick the instrument-specific tool — Piano2Notes, Guitar2Tabs, Sing2Notes, Drum2Notes, or the multi-instrument Transcription Studio. Each app uses an AI model trained specifically for that instrument's voicings and rhythmic patterns.

II.

Feed the audio

Upload MP3 or WAV, paste a YouTube link, or hit record from the mic. The first 20 seconds of any transcription can be downloaded as PDF — no login required, repeat as often as you want to test the quality before subscribing.

III.

Edit & export

Open the result in Edit Mode — change measures, fix wrong notes, adjust rhythm. Export as PDF sheet music, MIDI (quantized and unquantized), MusicXML, or GuitarPro for use in MuseScore, Sibelius, Finale, Cubase, FL Studio, Logic Pro.

Instrument-specific models

One tool per instrument.
Built around the part.

Most AI transcription tools train a single model on everything and produce a generic result. Klangio's pitch is the opposite: Piano2Notes only transcribes piano, Guitar2Tabs only guitar, Sing2Notes only vocals, Drum2Notes only drums. Each instrument gets a model tuned for its voicings, idioms, and rhythmic patterns. Drums get the cleanest accuracy in independent reviews; piano with isolated audio reads well. The multi-instrument Transcription Studio is the flagship — separates parts and notates each one in its own staff.

  • Polyphonic detectionPicks up chord voicings and multiple simultaneous notes, not just single melody lines — most consumer AI transcribers fail this test.
  • YouTube link inputPaste a URL, get a score. No need to download the audio first; rare in the consumer category.
  • Edit Mode + Piano roll viewThe result isn't a take-it-or-leave-it PDF. Fix the measure where the AI guessed wrong, adjust rhythm, re-export.
  • Pro DAW exportsMusicXML and GuitarPro are the formats notation pros actually use — MuseScore, Sibelius, Finale, Guitar Pro 8 all import cleanly.
App Catalogue · K-023 v.cur
Piano2NotesPiano · solo
Guitar2TabsGuitar · ac/elec
Sing2NotesVocal melody
Drum2NotesDrum kit
Melody ScannerFull song → piano
Scan2NotesSheet music OCR
Transcription StudioMulti-instrument
DAW PluginWin · Mac
Edit ModeIncluded
Pricing from$11.99/mo annual
Free demoFirst 20 sec
Karlsruhe · KIT University VERIFIED
Who it's for

The readership.

Built for musicians who'd rather skip the four-hour manual transcription and start with an AI first pass — then edit, not start from blank staff paper.

Practicing musicians

Hear a song on YouTube, want the chords. Paste the link, get a lead sheet. Test the first 20 seconds for free before subscribing.

Music students

Ear-training homework, dictation practice, transcription assignments. Klangio is the AI tutor that gives you the first-pass answer — then you fix the mistakes yourself.

Composers & arrangers

Humming an idea into the mic, getting it as MIDI in Logic or Cubase within seconds. Skip the step where ideas die in your head because you can't notate fast enough.

Music teachers

Generate worksheets, dictation examples, ear-training exercises. Compatible with MuseScore, Sibelius, Finale — drop the MusicXML straight into existing lesson plans.

Features

The full opus.

Klangio is a research-driven product — founder Sebastian Murgul is doing doctoral work on AI & music at KIT University, Karlsruhe. The features below are the headline tools, all under one subscription.

Signature

Audio (or YouTube) to sheet music

Drop an MP3, drop a WAV, paste a YouTube URL, or hit record. The AI returns sheet music in seconds. Polyphonic detection picks up chord voicings, multi-instrument transcription separates each part to its own staff. The first 20 seconds is free for any transcription — repeat as often as you like before subscribing.

MP3 · WAV · YouTube · microphone — one input pipeline
Export formats

PDF · MIDI · MusicXML · .gp

The four formats notation pros actually use. MIDI exports come in quantized and unquantized — useful for DAW import without losing the original timing feel.

DAW Plugin

Plugin or standalone

Windows and Mac DAW plugin alongside the web tool. Transcribe inside Logic, Cubase, FL Studio without leaving your session.

Edit Mode

Fix the wrong notes

Output is editable in-browser. Wrong note in measure 7? Swap it. Wrong rhythm? Re-quantize. The AI is a first draft, not a final master.

Compatibility

MuseScore · Sibelius · Finale

MusicXML lands cleanly in every major notation app. GuitarPro export opens directly in Guitar Pro 8 with TAB intact. No conversion gymnastics.

Honest disclosure

Quality varies by input · only 4/4 + 3/4 time

Worth being explicit about it. Reviewer feedback on MuseHub flags real limitations: "guitar reads are a mess, bass reads are a mess" on complex mixes, "transcriptions can be messy with extraneous notes", vocal pitch detection struggles even on isolated acapellas. Drums and isolated piano tend to read cleanest. Only 4/4 and 3/4 time signatures supported (no 6/8 or 5/4 yet). Distorted electric guitar transcribes only when isolated from other instruments. Treat outputs as drafts — Edit Mode exists for that reason.

Drafts — not final masters. Edit Mode is the point.
Honest comparison

Klangio vs AnthemScore
vs ScoreCloud vs Moises vs Guitar Pro.

AnthemScore is the long-running desktop AI transcription pick. ScoreCloud is the real-time notation favourite. Moises adds AI transcription on top of its stem-separation suite. Guitar Pro is the legacy manual notation editor with limited AI assistance. Klangio's slot is research-driven instrument-specific AI plus YouTube link input plus the four pro export formats — strongest at instrument-specific work, weaker on vocal pitch detection.

What you want to doKlangioAnthemScoreScoreCloudMoisesGuitar Pro
Audio file → sheet music✓ Yes✓ Yes✓ Yes✓ Yes— Manual entry
YouTube link as input✓ Direct paste— File only— File only✓ Yes— File only
Polyphonic / multi-instrument✓ Yes (Studio)✓ YesReal-time monoPer stem— Manual only
Instrument-specific models✓ Piano · Guitar · Voice · Drum— Generic— Generic— Generic— Manual
MusicXML export✓ Yes✓ Yes✓ YesLimited✓ Yes
GuitarPro (.gp) export✓ YesLimited— No— No✓ Native
Edit / fix output in-app✓ Edit Mode✓ Yes✓ YesLimited✓ Full editor
Vocal pitch accuracy— WeakDecent✓ StrongPer stem— Manual
Time signatures supported— 4/4 + 3/4 only✓ All common✓ All common✓ All common✓ All

// If you need every time signature and decent vocal detection — AnthemScore or ScoreCloud. If you want stem separation alongside transcription — Moises. If you want a manual notation editor with AI assistance — Guitar Pro. If you want instrument-specific AI, YouTube link input, and four pro export formats from a research-driven team in Germany — Klangio.

Letters from the field

What real users actually wrote.

★★★★★

"When I upload a drums-only recording, Drum2Notes produces an almost perfect sheet. The kit pieces are identified correctly, the rhythms quantize cleanly. For a working drum teacher generating worksheets, this is genuinely a workflow-changing tool."

D
Daniel K.
Drum teacher · MuseHub
★★★★★

"Klangio captured my lyrics and chord symbols accurately, and got most of my piano notes right. It doesn't know which hand plays what and rhythm needs cleanup — but as a starting point for further editing, it saves hours. The MusicXML export means I refine in MuseScore."

M
Mira H.
Singer-songwriter · MuseHub
★★★★☆

"Honest take: guitar transcription on a full-band mix is still messy — bass especially. Drums and isolated piano are the strong suits right now. Treat outputs as a first draft and use Edit Mode aggressively. Better than other transcription apps I've tried — but not yet at 'final master' quality for guitar work."

R
Ramon V.
Studio guitarist · forum
The story

Research from Karlsruhe.

Klangio (klang.io) is a research-driven AI music transcription company built in Karlsruhe, Germany. Founder Sebastian Murgul is doing doctoral work on AI & music at KIT University and positions the product explicitly as research-led — the suite is structured around instrument-specific AI models rather than a single general-purpose transcription engine. The flagship Transcription Studio handles multi-instrument work; standalone apps — Piano2Notes, Guitar2Tabs, Sing2Notes, Drum2Notes — are tuned for single-instrument accuracy. There's also a Scan2Notes OCR tool for printed sheet music, Melody Scanner for arrangement-style transcriptions, and a DAW Plugin for Windows and Mac.

The honest version: independent reviewer feedback (MuseHub, audio forums) flags real limitations. Guitar transcription on a full-band mix tends to come back messy — bass especially. Vocal pitch detection struggles even on isolated acapellas. Distorted electric guitar transcribes cleanly only when isolated from other instruments. Only 4/4 and 3/4 time signatures are currently supported — no 6/8 or 5/4 yet. The product is in active R&D and outputs are best treated as first drafts, which is why Edit Mode exists.

Where Klangio is strong: drums (consistently the cleanest AI transcription in user reviews), isolated piano, lyric capture, chord symbol detection, and the export pipeline. The four pro export formats — PDF, MIDI, MusicXML, GuitarPro — drop cleanly into MuseScore, Sibelius, Finale, Guitar Pro 8, Cubase, FL Studio, Logic Pro. YouTube link input is rare in this category and is one of the smoother user experiences in the AI transcription space.

Pricing is freemium with a generous test surface: the first 20 seconds of any transcription downloads as a PDF for free, no login required, repeatable as often as you like. Paid plans unlock full-length transcriptions (15 min at once), Edit Mode, DAW Plugin access, and the four export formats — from $11.99 / month billed annually. Full feature list, demos, and the free tier at klang.io.

FAQ

The small print.

What does Klangio actually do?

Klangio is an AI music transcription suite — audio in, sheet music out. Drop an MP3 or WAV file, paste a YouTube link, or record from the microphone; the AI returns notation in PDF, MIDI (quantized and unquantized), MusicXML, and GuitarPro formats. The suite is built around instrument-specific apps: Piano2Notes, Guitar2Tabs, Sing2Notes, Drum2Notes, plus the multi-instrument Transcription Studio flagship and adjacent tools like Scan2Notes (sheet music OCR) and Melody Scanner.

Is there a free demo to test the accuracy?

Yes — the first 20 seconds of any transcription downloads as a PDF for free, no login required, repeatable as often as you want. This is generous compared to other AI transcription tools and lets you test the actual output quality on your own audio before subscribing. Paid plans unlock full-length transcriptions up to 15 minutes, Edit Mode, the DAW Plugin, and full export to all four formats — from $11.99 per month billed annually.

How does it compare to AnthemScore, ScoreCloud, Moises, and Guitar Pro?

AnthemScore is the long-running desktop AI transcription pick — solid, supports all time signatures, but generic single-model architecture. ScoreCloud is real-time notation favourite, strong vocal pitch detection. Moises adds AI transcription on top of stem separation. Guitar Pro is legacy manual notation with limited AI. Klangio's edge is instrument-specific models (one app per instrument), YouTube link input, and the four pro export formats including GuitarPro. The trade is current 4/4 + 3/4 time signature limitation and weak vocal pitch accuracy versus ScoreCloud.

What's the catch with the time signatures?

As of the latest release (Sept 2025 documentation), Klangio's apps can only transcribe in 4/4 and 3/4 time signatures. No 6/8 yet, no 5/4, no 7/8, no compound or odd meters. This is a real limitation for jazz, prog rock, certain classical, and folk transcriptions. If you need every time signature out of the box, AnthemScore or ScoreCloud are better fits today; Klangio's team is actively researching, so this may expand.

How accurate is the AI transcription really?

Honest answer based on independent reviewer feedback: drums (Drum2Notes) are the strongest, often near-perfect on isolated drum recordings. Isolated piano reads well. Lyric capture and chord symbol detection are reliable. Where it struggles: guitar transcription on full-band mixes (bass especially), vocal pitch detection even on isolated acapellas, and distorted electric guitar mixed with other instruments. Edit Mode exists for that reason — treat the AI output as a first draft, fix what's wrong, then export.

Can I use YouTube videos as input?

Yes — paste the YouTube URL directly into Klangio, and the AI transcribes from the audio of the video. No need to download the audio first. This is one of the smoother input options in the AI transcription category; most competitors require you to upload a local file. Useful when you've heard a song online and want a quick lead sheet without separately ripping the audio.

Which DAWs and notation software work with the exports?

MusicXML drops cleanly into MuseScore, Sibelius, Finale, and Dorico — every major notation app. GuitarPro exports open natively in Guitar Pro 8 with TAB intact. MIDI files (both quantized and unquantized) work with Cubase, FL Studio, Logic Pro, Ableton Live, Reaper, Pro Tools — every modern DAW. PDF is the print-ready output for sharing or rehearsal sheets.

How do I cancel a Klangio subscription?

Subscriptions are managed through your Klangio account. If you signed up via the web, log in and cancel from the account dashboard. If you subscribed through the MuseHub app, cancel via your MuseHub account settings. Note: the subscription via MuseHub is only valid for use within the MuseHub app itself; the standalone Klangio subscription is broader and includes the DAW Plugin access.

Press play

Audio in. Sheet music out.

Test the first 20 seconds free, no login. Then subscribe from $11.99/month annual for the full suite — Piano2Notes, Guitar2Tabs, Sing2Notes, Drum2Notes, Transcription Studio, DAW Plugin.

Open the studio Try free demo