How to Convert Sheet Music to MIDI for Free [Beginner's Guide]

What You Need to Know Before Converting Sheet Music to MIDI

Most people searching for ways to convert sheet music to MIDI have one of two goals: they want to import a printed or handwritten score into their DAW and skip the tedious note-entry process, or they want to turn a scanned piece of music into usable digital data.

This guide walks you through the entire process — from converting a sheet music image (JPEG or PDF) to a MIDI file using free tools, all the way to loading that MIDI into your DAW and getting to work. By the time you finish reading, you'll have a clear, end-to-end workflow: sheet music → MIDI → DAW.

The Technology Behind It: What Is OMR (Optical Music Recognition)?

The technology that converts sheet music into digital data is called OMR (Optical Music Recognition). Think of it as OCR — the software that turns scanned text into editable text — but for music. OMR uses AI to read notes, rests, dynamics, tempo markings, and other elements from a staff and outputs them as a MIDI file or MusicXML.

Thanks to recent advances in AI, some OMR tools can even handle handwritten scores with reasonable accuracy. That said, recognition quality varies significantly depending on image resolution, print quality, and musical complexity — so you should always plan to review and clean up the result in a MIDI editor.

• Where OMR excels: High-resolution scans (300 dpi or higher) of printed scores, simple single-line melodies
• Where OMR struggles: Handwritten or low-resolution scores, complex multi-voice arrangements

5 Free Tools to Convert Sheet Music to MIDI

1. LA Studio (Sheet Music OCR → MIDI)

LA Studio is a free, browser-based DAW with a built-in sheet music OCR feature called LEGATO AI, which lets you upload a score image and instantly import it as a MIDI region directly in the editor. From there you can edit notes in the piano roll and export — no software to install, no account required to get started (an account is needed for cloud saves). For beginners, this all-in-one browser workflow is hard to beat.

Here's how to use it:

1. Open the LA Studio editor at https://la-studio.cc/editor
2. Select "Sheet Music OCR (LEGATO AI)" from the menu
3. Upload your sheet music file (JPEG, PNG, or PDF)
4. The AI automatically recognizes the score and places it as a MIDI region in the editor
5. Open the piano roll to review and fix any notes
6. Export as a MIDI file when you're done

2. MuseScore (Free Notation Software)

MuseScore is a free notation program for Windows, Mac, and Linux. It supports both MusicXML and MIDI import/export, making it a great companion to OMR tools — import your MusicXML output, clean it up visually, then export to MIDI. Its notation-based editing interface makes fixing errors intuitive, especially for users who can read music.

3. Audiveris (Free, Open-Source OMR Engine)

Audiveris is an open-source, Java-based OMR engine. It requires installation, but it's completely free with no commercial restrictions. It outputs MusicXML, which you can then load into a DAW or MuseScore. Recognition accuracy is solid for clean printed scores, and the software is highly configurable — making it a great choice for power users.

4. PlayScore 2 (Mobile App — Free Tier Available)

PlayScore 2 is an OMR app for iOS and Android. Point your phone's camera at a piece of sheet music and it recognizes and plays it back in real time. The free tier covers a limited number of scans, and MIDI export requires a paid plan — but it's a quick and easy way to test OMR accuracy before committing to a full workflow.

5. SmartScore (Desktop — Free Trial Available)

SmartScore is one of the most established OMR applications on the market, with recognition accuracy that's widely considered best-in-class. It's a paid product, but a free trial is available with a limited number of conversions. It handles complex, multi-voice piano scores better than most alternatives.

Step-by-Step: How to Convert Sheet Music to MIDI

Step 1: Scan or Photograph Your Sheet Music at High Resolution

This step has the biggest impact on your final result. If you're using a scanner, scan at 300 dpi minimum (600 dpi is ideal) in grayscale or black and white. If you're using a smartphone, shoot straight down with even lighting and no shadows. Skewed or distorted images will significantly reduce recognition accuracy.

Step 2: Run the Image Through an OMR Tool

Use one of the tools listed above to generate your MIDI or MusicXML file. With LA Studio's LEGATO AI, just upload the image — the MIDI region is created automatically. With Audiveris or SmartScore, select MusicXML or MIDI as your export format and save the file.

Step 3: Import the MIDI Into Your DAW and Fix Errors

OMR is never perfect, so always review the result in your DAW's piano roll. The most common recognition errors include:

• Incorrect note durations (dotted notes, triplets)
• Octave displacement
• Missed accidentals (sharps and flats)
• Misread ties and slurs
• Missing dynamics and tempo markings

Go through the piano roll and correct what needs fixing. A simple melody might need only a handful of edits; a complex sonata with dense chords may require more significant cleanup.

Step 4: Assign a Sound and Export

Once the MIDI is clean, assign a software instrument and hit play. In LA Studio, you can assign instruments like Salamander Grand Piano or Vital directly to the track. When you're satisfied, export as WAV or MP3.

Manual Note Entry: When OMR Isn't an Option

If your sheet music is too blurry, too messy, or too stylized for OMR to handle, entering notes manually in your DAW's piano roll is the most reliable fallback. It sounds tedious, but with a bit of practice you can move surprisingly fast.

Tips for efficient manual entry:

• Set your DAW's time signature and tempo to match the score — this aligns the grid with the bar lines and makes placing notes much easier
• Start with the melody — enter the right-hand lead line first, then layer in the left-hand accompaniment
• Enter chords all at once — in the piano roll, stacking multiple notes on the same position creates a chord
• Play back every few bars — listen as you go and catch mistakes early before they compound
• Use LA Studio's AI note prediction (Tab key) — while entering notes in the piano roll, pressing Tab triggers an AI suggestion for the next note, which can meaningfully speed up your workflow

How to Import a MIDI File Into Your DAW (Universal Basics)

The process for loading a MIDI file is largely the same across most DAWs:

1. Open your DAW and create a new project
2. Drag and drop the MIDI file into the track area (or use File → Import / Open)
3. Double-click the imported MIDI region to open the piano roll
4. Review and edit the notes as needed
5. Assign a plugin instrument or sound library and press play

In LA Studio, the process is even simpler — just drag the MIDI file into the browser window and it loads directly into a track. Since it runs entirely in your browser, it works just as well on a Chromebook or a work computer where you can't install software.

Creative Applications: Taking Your Digitized Scores Further

Use Classical Scores as Arrangement Source Material

Sheet music for public domain classical works — Bach, Chopin, Mozart, and others whose composers died more than 70 years ago — can be converted to MIDI and used freely as source material for your own arrangements and productions. One caveat: if the edition or arrangement was created by a living editor or arranger, that specific version may still be under copyright. Always check the edition details.

Combine with Audio-to-MIDI Conversion

If you don't have sheet music at all, you can generate MIDI directly from an audio recording using audio-to-MIDI conversion. LA Studio includes a browser-based audio-to-MIDI tool powered by Basic Pitch — record or import a performance, convert it to MIDI, and refine it in the piano roll.

Hum a Melody with Voice-to-MIDI

If you don't have sheet music or a recording — just a melody in your head — you can sing or hum it and convert that to MIDI using a voice-to-MIDI tool. LA Studio includes a browser-based version of this feature. It's a great entry point for people who don't read music but have musical ideas they want to capture.

Summary

There are two main approaches to converting sheet music to MIDI: automatic conversion using an OMR tool followed by cleanup, or manual note entry in your DAW's piano roll. For beginners, the easiest place to start is LA Studio, which handles the entire workflow — sheet music OCR, MIDI conversion, piano roll editing, and export — right in your browser, for free.

OMR won't get everything right, but treating the output as a rough draft that needs editing is a perfectly sensible approach. Even with cleanup time factored in, converting a scanned score is almost always faster than entering a full piece from scratch. Build the habit of high-quality scanning → OMR conversion → DAW cleanup, and you'll dramatically speed up both your digitization and music production workflows.

Frequently Asked Questions

Q. Can I convert handwritten sheet music to MIDI?

A. Yes, but handwritten scores produce lower OMR accuracy than printed ones. Clean, consistently drawn notation scanned at high resolution will give better results. In practice, handwritten scores often generate enough errors that you'll spend significant time on manual corrections — in some cases it may be faster just to enter the notes by hand from the start.

Q. Can I convert a PDF score?

A. OMR tools can't extract MIDI directly from PDF text data, but you can export each page as an image (JPEG or PNG) and run that through an OMR tool. Adobe Acrobat and most browser PDF viewers let you save pages as images. LA Studio's LEGATO AI also accepts PDF uploads directly.

Q. What about copyright — can I freely use the MIDI I convert?

A. Converting a piece of music to MIDI doesn't change its copyright status. Distributing, publishing, or commercially using a MIDI conversion of a copyrighted work without permission may constitute copyright infringement. Personal practice and study generally falls under fair use, but if you plan to release or monetize anything, check with the relevant rights holders or a performing rights organization like ASCAP or BMI. Public domain works can be used freely.

Q. What's the difference between MIDI and MusicXML?

A. MIDI records performance data: which notes are played, when, how hard, and at what tempo. MusicXML goes further and also stores notation details — note types, accidentals, dynamics, lyrics, and other visual score information — in an XML structure. OMR tools often output MusicXML because it preserves more musical context. A common workflow is: OMR exports MusicXML → open in MuseScore to verify and edit the notation → export as MIDI for use in your DAW. For DAW-based production, MIDI alone is usually sufficient.

Q. Is this completely free? Do I need to install anything?

A. LA Studio's LEGATO AI sheet music OCR runs on a credit-based system, but basic conversions are available within the free tier (note that AI-heavy features like sheet music OCR and music generation consume credits). Audiveris is fully free and open-source, but requires a Java installation. MuseScore is free to download and use. If you want an entirely browser-based workflow with nothing to install, LA Studio is your most accessible option.