How to Convert Audio to MIDI: 5 Methods Compared

What does "audio to MIDI" actually mean?

Audio to MIDI conversion turns an MP3, WAV, or any recorded performance into editable MIDI notes you can use inside a DAW. Audio files store a recorded sound wave; MIDI files store instructions - which notes to play, when, how loud, how long. That's why MIDI is so useful: once your melody exists as MIDI, you can change the instrument, fix wrong notes, transpose the key, quantize the timing, or rebuild the whole arrangement around it.

Converting audio to MIDI reverses the recording process. Software listens to a recording, detects the pitches and rhythms inside it, and writes them as editable MIDI notes. It's the musical equivalent of speech-to-text - and just like speech-to-text, it works well on clean, single-source material and struggles when many sounds play at once.

This guide covers five ways to do it, from a free online AI converter to built-in DAW tools, plus how to get the best accuracy and how to fix the wrong notes every method occasionally produces.

First, know what you're converting: melody, chords, or drums

Every audio-to-MIDI method works differently depending on the material. Before you start, sort your audio into one of three buckets:

• Melody (monophonic): one note at a time - a vocal line, a hummed idea, a bass riff, a lead synth. This is the easiest case and converts with high accuracy in almost any tool.

• Chords (polyphonic): multiple notes at once - piano, rhythm guitar, string pads. Harder, because the software must untangle overlapping harmonics. Modern AI handles it well; older tools don't.

• Drums (percussive): no pitch to detect, just hits. Needs a tool with a dedicated drum mode that maps hits to a kit (kick, snare, hats), not a pitch detector.

Quick rule: use a free online AI converter for melodies and chords when you want fast results, Ableton for drums, Logic or FL Studio for native DAW workflows, and Melodyne when manual correction matters more than speed.

How to convert audio to MIDI

To convert audio to MIDI:

1. Choose the right method for your source: melody, chords, or drums

2. Upload or import your MP3, WAV, M4A, or FLAC file

3. Run the converter or DAW transcription tool

4. Download or create the MIDI file

5. Open the MIDI in your DAW and fix wrong notes, timing, and velocity

One warning before you start: every converter works best on a short, clean clip with one instrument or stem. Full mixes, heavy reverb, and low-quality MP3s create more wrong notes in every tool - details in the audio quality section below.

Best audio to MIDI converters compared

No single tool wins everything. The sections below explain each method, when it's the right choice, and how to use it.

Use the table to match the tool to the source material.

How to convert audio to MIDI online (free option)

Online AI converters are the fastest route - no DAW required, no plugins to install. RaoMusic's audio to MIDI converter runs on Spotify's Basic Pitch model, which was trained specifically for music transcription and handles monophonic and polyphonic sources like vocals, piano, and guitar.

How it works:

1. Upload your audio (MP3, WAV, M4A, or FLAC, up to 10 minutes) - a vocal, a hummed melody, piano, guitar, or bass

2. The AI detects pitch, timing, and chords and writes them as MIDI notes - usually in under a minute

3. Download a standard .mid file

4. Open it in Ableton Live, Logic Pro, FL Studio, Reaper, GarageBand, Cubase - or clean it up first in RaoMusic's online MIDI editor

Each conversion uses 10 credits, and new users get 50 free credits to start - enough for several conversions before paying anything.

Pros: No software to install, polyphonic support for layered sources like piano and guitar, works on Mac, Windows, or phone

Cons: Dense full-mix conversions need note cleanup afterward; your file is processed on a server

Use this when you want a fast result, don't own a DAW, or want to convert polyphonic audio like a piano recording without buying Melodyne. For drums, an online converter only gives a rough rhythmic sketch - Ableton's drum conversion (below) does proper kick/snare/hat mapping.

The fully free route: Spotify publishes Basic Pitch itself as a free demo, which can convert short audio to MIDI at no cost. RaoMusic runs the same underlying model but adds a browser workflow, file handling, MIDI editing, and DAW-ready .mid export.

A clean clip in, editable MIDI out.

How to convert audio to MIDI in Ableton Live

Ableton Live has had native audio-to-MIDI commands for over a decade, with three dedicated modes. Right-click any audio clip and choose:

• Convert Melody to New MIDI Track - for vocals, basslines, leads

• Convert Harmony to New MIDI Track - for chords, polyphonic material

• Convert Drums to New MIDI Track - for drum loops; maps hits to a Drum Rack

Ableton creates a new MIDI track, guesses the likely notes, and even loads an instrument so you hear the result immediately.

Quick workflow:

1. Drop your audio clip into a track

2. Right-click the clip and pick the conversion that matches your material

3. Audition the generated MIDI alongside the original (Ableton mutes the source clip so you can compare)

4. Fix wrong notes in the MIDI clip editor

Pros: Built in (Live Standard and Suite), the drum conversion is one of the strongest built-in drum-to-MIDI tools anywhere, instant A/B comparison

Cons: Harmony mode struggles with dense chords; not available in Live Intro or Lite

Ableton's own advice for better results (from the Live manual): use audio with distinct attacks (notes that fade in or swell may not be detected), convert solo'd single sources rather than full mixes, and prefer WAV or AIFF over MP3 - lossy formats can give unpredictable results. You can also add or move transient markers before converting to control where notes get divided.

How to convert audio to MIDI in Logic Pro

Logic Pro's route is Flex Pitch, which analyzes the pitches in an audio region so you can edit them like MIDI notes - and then export them as actual MIDI.

Quick workflow:

1. Enable Flex Pitch on the audio track (track header > Flex button > Flex Pitch)

2. Double-click the region to open the editor - Logic shows every detected note as a block

3. Fix any mis-detected notes first (the export only gets better if the analysis is right)

4. In the editor's menu, choose Edit > Create MIDI Track from Flex Pitch Data

5. Logic creates a new MIDI region with the transcribed notes - usually on a software instrument track

Pros: Built into Logic Pro (no extra purchase), the Flex Pitch editor lets you correct the analysis before exporting, also great for pitch correction in general

Cons: Flex Pitch is designed to analyze one note at a time - best on monophonic material like vocals, bass, and lead lines; for chords, use an AI converter or Melodyne instead; Mac only

A second, cruder Logic route is Convert to New Sampler Track (slices the audio and maps slices to keys), but that gives you a playable sampler instrument, not editable note data - useful for chopping, not for transcription.

How to convert audio to MIDI in FL Studio

FL Studio's native path runs through Edison, the built-in audio editor. A piano roll, if you're new to FL, is the grid editor where MIDI notes appear as blocks you can move, shorten, or delete.

Quick workflow:

1. Load your audio into Edison (drag it in, or add Edison to a mixer track and record)

2. Click the wrench/tools menu and choose Analyze > Convert to Score and Dump to Piano Roll

3. Edison transcribes the pitches and writes the notes into FL's piano roll

4. Edit the notes there, or drag them onto any instrument channel

A slower alternative inside FL is NewTone (pitch editor) for monophonic material - edit the detected pitch blobs, then export them to the piano roll.

Pros: Edison comes with FL Studio, output lands directly in the piano roll, no extra purchase

Cons: Pitch-based only - no dedicated drum-to-MIDI mapping; polyphonic accuracy is hit-or-miss on dense chords; the conversion dialog's sensitivity and threshold settings take some trial and error

How to export MIDI from audio in Melodyne

Celemony's Melodyne is the professional-grade option. Its note-detection editor shows every detected note as a blob you can correct before export, which makes it the most controllable route for messy material - if you're willing to pay and work manually.

Quick workflow:

1. Transfer your audio into Melodyne and pick an algorithm: Melodic for single-note material, or Polyphonic - which requires an edition with DNA note detection (Editor or Studio)

2. Correct any mis-detected notes in the editor first

3. File > Export > MIDI, with or without pitch bends

4. Import the .mid file into your DAW

Pros: Professional polyphonic note detection (DNA), full manual control before export, ARA integration in most major DAWs

Cons: Paid; MIDI export and DNA support depend on the edition, so check Celemony's edition comparison before buying; slower, manual workflow - overkill for simple melodies

Get better results: audio quality matters more than the tool

Every conversion method - AI or DAW - listens to the same thing: your source audio. Bad audio in, bad MIDI out. Before blaming the tool:

• Convert single sources, not full mixes. A soloed piano stem transcribes cleanly; a full song with drums, bass, and vocals fighting for the same frequencies produces ghost notes. If you only have the full mix, run it through a stem separator first, then convert one stem at a time.

• Use WAV over MP3 when possible. Compression smears transients - the note attacks that transcription depends on. If MP3 is all you have, use at least 320kbps. The same workflow applies whether you're converting WAV to MIDI, MP3 to MIDI, or a short phone recording to MIDI.

• Cut the mud before converting. A high-pass filter below ~80Hz removes rumble, and gating out reverb tails and room noise helps the detector lock onto real notes. Many producers EQ a copy of the audio before running any conversion.

• Prefer clear attacks. Plucked guitar, piano, and staccato parts convert better than pads, bowed strings, and heavily reverbed vocals, where notes blur into each other.

• Keep clips short. Convert a 30-second phrase rather than a 5-minute take - fewer errors to hunt down, and you learn which settings work before committing.

Only upload audio you have the right to process - if you're converting commercial songs or client material, check the tool's terms first.

Fixing a messy conversion (troubleshooting)

Every method occasionally produces wrong output. Here's the fix for each classic problem:

What to do with your MIDI after converting

Getting the .mid file is the start, not the end. The classic moves:

1. Swap the instrument - the number one reason people convert: replay that guitar riff on a synth, that vocal melody on piano or strings

2. Fix and quantize - correct wrong notes, tighten timing (in Ableton, quantize from the MIDI clip; in Logic, use Piano Roll quantize; in FL, right in the piano roll)

3. Transpose - move the idea into the key of your song

4. Double the original - keep the source audio and layer the MIDI version with a different instrument for thickness

5. Build on it - the transcribed chords tell you the progression; write a new melody or bassline on top in your DAW or the lyrics studio