Klangio turns recordings, audio files and YouTube links into sheet music, guitar TABs, MIDI and MusicXML, with a multi-instrument Transcription Studio, instrument-specific apps and a DAW plugin.
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Klangio is a family of AI music transcription apps that turn recordings, audio files and online video links into sheet music, guitar TABs, MIDI and MusicXML. It is made by Klangio GmbH, a music software company based in Karlsruhe, Germany. The company says it was founded in 2018 by Sebastian Murgul and Alexander Lüngen.
Instead of a single app, Klangio sells a product family: Transcription Studio as the all-in-one workspace, a Transcription Plugin for audio to MIDI inside a DAW, six instrument-specific apps such as Piano2Notes and Guitar2Tabs, the Scan2Notes sheet music scanner, Melody Scanner for arrangements, and a developer API. Every app has a free tier, and in the ticket-based apps a demo covers the first 20 seconds; paid plans unlock full-length transcriptions, editing and editable export formats.
The short verdict: Klangio is built to produce a draft score quickly, and the draft is most reliable on clean, single-instrument recordings. Its own pages also disagree on how many full transcriptions the Studio Pro plan includes, which the Pricing section lays out side by side.
Transcription Studio is Klangio's flagship. It turns full songs into separate, editable parts for piano, guitar, bass, drums, vocals, strings, winds and more, and it runs in the browser and as a mobile app.
Klangio's specialist apps each focus on one instrument family and, according to the company, are powered by the same transcription engine as Transcription Studio. They cost less than the all-in-one plan but transcribe only their own instruments.
The plugin is Klangio's audio to MIDI tool for producers. It automatically detects up to 8 different instruments and generates unquantized MIDI for each, so you drag audio in and drag MIDI out into a DAW track without menu diving.
Recording quality drives output quality. Klangio's help center states that effects like reverb, delay, and distortion will have a negative effect on the transcription, and that a smartphone microphone is enough when the take is clean. When a demo is upgraded, the whole piece is analyzed, so the full result can differ from the demo, and quality might slightly decrease if the full piece is long or contains unexpected changes; Klangio recommends splitting long audio or fixing small mistakes in the editor.
The products page lists four audio transcription plans (prices in USD, as captured on October 6, 2026):
| Plan | Monthly price | Annual billing | Full transcriptions per month | Max length | Paid exports and editor |
|---|---|---|---|---|---|
| Free | $0 | — | None (demos only) | 20 seconds | PDF only |
| Instrument Pro (one specialist app) | $14.99 | $6.24 per month | 50 | 15 minutes | Yes |
| Studio Pro | $19.99 | $8.33 per month | 50 | 15 minutes | Yes |
| Ultimate | $29.99 | $12.49 per month | 250 | 15 minutes | Yes, plus the DAW plugin |
The table does not cover every page. The plugin page sells a "Klangio Studio Pro" plan at $8.49 per month billed annually or $19.99 billed monthly with "Unlimited" transcriptions under a Fair Usage Policy, and the help center describes Studio Pro as an unlimited plan with a soft limit of 1,000 full transcriptions per month. The products page and the terms instead give the Pro plan 50 tickets. A separate Plugin Pro plan is also listed at $19.99 per month ($8.33 billed annually) with 50 transcriptions and up to 3 devices.
How tickets behave:
Refunds and payment: the terms offer refunds within 14 days of purchase provided the transcription has not been exported. EU consumers can also withdraw from a subscription within 14 days, but the refund is not issued automatically and must be requested from support. Payment is by PayPal or credit card.
The developer API is priced separately. It runs from a free Basic tier with 50 requests and 15-second audio to Startup at $99 per month (500 requests, then $0.20 each) and Business at $499 per month (3,000 requests, then $0.17 each), with an Enterprise tier on request.
Klangio's terms state that it cannot guarantee transcriptions will be complete, error-free or meet musical standards, and that users must check and adjust them. An independent July 2026 review listed three drawbacks: struggles with complex recordings that contain multiple instruments, rhythm detection that fails to identify swing, expressive timing and irregular rhythms, and poor drum transcription. On a third-party review platform with 149 reviews and a 4.1 rating (as captured on October 6, 2026), an AI summary of 85 recent reviews was positive overall but noted failed PDF exports, occasional transcription inaccuracies and note-editing tools that some found hard to use.
Yes, within demo limits. Every app has a free tier, and in the ticket-based apps a demo transcribes the first 20 seconds with PDF output and no account required; the terms cap demos at 30 per day and reserve them for non-commercial use.
It depends on the page. The products page and the terms list 50 per month, while the plugin page and help center describe Studio Pro as unlimited under a fair use policy with a 1,000-per-month soft limit.
No, according to the terms, which state that uploaded content is not used to train the AI models or for any purpose beyond providing the service.
Transcription Studio is designed to separate full mixes into parts, but independent testing found mixed results on multi-instrument recordings and weak drum transcription, and the terms say every result must be checked and adjusted by the user.
The terms allow refunds within 14 days of purchase if the transcription has not been exported, and EU subscribers have a 14-day withdrawal right that must be requested through support.
