To convert audio to MIDI in Mozart Studio, open a Studio project, select an audio clip, open its clip menu and choose Convert to MIDI. When the conversion finishes, open the MIDI result in the piano roll and check its notes, timing and length against the original audio before you begin editing.

Audio-to-MIDI turns a recorded performance into note events that can be moved, shortened, copied or played with another instrument. It does not copy the original instrument's tone, effects or expression exactly. Treat the result as editable transcription, then listen and correct it in context.

What audio-to-MIDI gives you

Audio is a recording of sound. MIDI stores musical instructions such as note pitch, position and duration. Converting between them is useful when the musical idea is right but you want to change the notes, test another sound or build an arrangement around the performance.

A practical conversion can help you:

  • turn a recorded melodic idea into an editable MIDI clip;
  • inspect the notes in a piano roll;
  • correct timing or pitch without re-recording the whole idea;
  • try the same performance with a different instrument;
  • copy a phrase into another part of the arrangement.

The conversion is a starting point. A dense mix, overlapping notes, background noise, effects and loose timing can make transcription harder to review. Keep the original audio beside the MIDI clip until you have checked the result.

A three-stage illustration showing source audio, transcription and MIDI review
Start with clear source audio, convert the selected clip, then review the resulting notes in the piano roll.

Convert an audio clip in Mozart Studio

  1. Open a new Mozart Studio project and add or record the audio idea you want to transcribe.
  2. Select the audio clip in the arrangement. Use a short passage that contains the musical phrase you actually want to edit.
  3. Open the clip menu and choose Convert to MIDI. Mozart's current web application uses that label for the audio-to-MIDI action.
  4. Wait for the conversion to finish, then open the MIDI result in the piano roll.
  5. Play the original audio and MIDI in turn. Check pitch, rhythm, note length and any extra or missing notes before changing the sound.

The interface may prevent conversion while playback is running or when a clip is outside the current length limit. If the action is unavailable, pause playback, shorten the selection and check the current plan access shown in Mozart.

Mozart audio-to-MIDI piano-roll feature artwork
First-party Mozart audio-to-MIDI artwork. It illustrates the feature and is not a measured conversion result.

Watch the recorded Mozart workflow

Mozart's audio-to-MIDI tutorial begins the conversion demonstration at about 0:53 and opens the piano roll at about 1:28. Use it to see the recorded sequence, then follow the labels in the current interface because controls can change after a tutorial is published.

Owned Mozart tutorial. Start at 0:53 for the recorded audio-to-MIDI workflow and at 1:28 for the piano-roll view. The video demonstrates the feature; it is not an independent accuracy test. — Mozart AI on YouTube

Prepare audio that is easier to review

Begin with one clear musical line when possible. A short vocal melody, bass phrase or single-instrument recording is easier to inspect than a full mix containing several parts at once. Reduce avoidable noise and very long effect tails before conversion, but keep an untouched copy of the source.

Choose a passage with a clear start and end. If the recording drifts against the project tempo, decide whether you want the MIDI to preserve that feel or sit more tightly on the grid. That decision changes how you judge the result.

When the part you need is buried inside a complete song, separating the relevant audio first may give you a more focused source. Decide whether you need editable notes, separated audio or both.

Check the MIDI before changing instruments

Listen once before looking at the piano roll. The original performance is your reference, so note the phrase, rhythm and accents you expect to hear. Then inspect the MIDI with five questions:

  • Pitch: do the important notes match the musical line?
  • Timing: do note starts follow the performance or land where you need them?
  • Duration: are sustained notes held long enough, and are short notes clipped cleanly?
  • Extras: did noise, bleed or ornamentation create notes you do not need?
  • Gaps: are any musically important notes missing?

Correct the most noticeable problem first. If the melody is right but the rhythm feels stiff, preserve the notes and adjust timing selectively. If the conversion contains many unwanted notes, returning to a cleaner or shorter source can be faster than editing every event.

Keep the source while you edit

Do not delete the audio immediately. Mute and unmute the original while you work, or keep it on a nearby track, so you can compare the MIDI with the performance that inspired it. Name the new clip clearly and save the project before making large timing or pitch changes.

After the notes are dependable, choose an instrument that serves the arrangement. The new sound will respond to the MIDI data rather than inherit the source recording's timbre. Adjust note lengths and velocities for that instrument instead of expecting the first playback to reproduce every detail of the recording.

MIDI and stems solve different problems

Choose MIDI when you want editable notes that can drive an instrument. Choose stems when you want separate audio parts that preserve more of the recorded sound. A MIDI bass line can be rewritten note by note; a separated bass stem remains audio and can be balanced, processed or cut without becoming an editable score.

For some projects, the useful sequence is to isolate a clearer part, convert that part to MIDI and then compare the new instrument with the original. Each stage introduces decisions, so keep the source files and listen after every conversion rather than assuming one automated step recovered the full performance.

Check current access before a larger project

Mozart's current pricing page lists audio-to-MIDI among the Studio features on its paid Creator, Pro and Premium plans. Plan names, promotional prices, credits and limits can change, so verify the live page and the in-product message before planning a large batch of conversions.

current pricing page

This workflow describes Mozart's browser Studio. The existence of a Mozart iOS app does not establish that the same audio-to-MIDI controls are available natively on mobile.

Sources and further reading

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Frequently asked questions

What is audio-to-MIDI conversion?

Audio-to-MIDI conversion analyses a recording and produces note events that can be opened in a piano roll. Those events represent pitch, timing and duration rather than the original sound. The result is useful for editing or changing instruments, but it still needs listening and correction against the source performance.

How accurate is Mozart's audio-to-MIDI conversion?

Accuracy depends on the source and the musical material. Mozart publicly offers audio-to-MIDI, but this guide does not claim a universal accuracy score. Test the feature with the passage you plan to use, keep the original audio and check important notes, timing, durations, extras and gaps before relying on the result.

Does audio-to-MIDI preserve the original instrument sound?

No. MIDI contains musical instructions, not the recorded timbre, room sound or effects. You can use the converted notes to play another instrument and then shape that instrument for the arrangement. Keep the original audio if you want to preserve the recorded character or compare the transcription with the performance.

Is a single melody easier to convert than a full song?

A clear, isolated musical line is generally easier to inspect than a dense mix with overlapping parts. If you start with a full song, decide whether you first need a separated part. Even with a clean source, audition the resulting MIDI because note detection and timing can still need correction.

What should I do if Convert to MIDI is unavailable?

Pause playback, confirm that an audio clip is selected and try a shorter passage. The current application can disable conversion while another conversion is active or when a clip exceeds its allowed length. Also check the plan access shown in Mozart, because availability and limits can change.

Do I need a paid Mozart plan for audio-to-MIDI?

Mozart's pricing page currently lists its audio-to-MIDI model on the paid Creator, Pro and Premium plans. Promotional pricing and plan details can change. Check the live plan page and the message shown in your account before purchase, especially if you need several conversions for a project.

Can I use this exact workflow in the Mozart mobile app?

This article covers the browser Studio workflow. Mozart also offers an iOS app, but that does not prove the same conversion controls are present in the native app. Check the current mobile interface or product documentation before depending on audio-to-MIDI away from the browser.

Should I quantize the MIDI immediately?

Listen first. Automatic quantization can help when the part should follow a strict grid, but it can also remove intentional timing. Compare the MIDI with the original performance, decide which feel you want to preserve, and correct the largest mistakes before applying a broad timing change.