How to Turn Your Humming into a MIDI Melody (Free)

You Can Hum It — Here's How to Turn It Into a MIDI Melody

If you've ever caught yourself humming a melody in the shower and thought "I wish I could turn that into a real song," you're in the right place. This guide shows you exactly how to go from humming into your microphone to having an editable MIDI melody — the kind you can tweak, add instruments to, and build a full track around — in just a few minutes. No music theory knowledge required, no instruments to play, and no software to download.

The short answer: record your hum as an audio file, then use a free online Voice to MIDI or Audio to MIDI converter to automatically detect the pitches and turn them into MIDI notes. Below we'll walk through every step.

What Is MIDI, and Why Does It Matter?

Before we dive in, a quick plain-English definition: MIDI (Musical Instrument Digital Interface) is not audio — it doesn't store sound. Instead, it stores instructions: which note to play, how long to hold it, how hard to press it. Think of it like sheet music for a computer. Once your hum is converted to MIDI, you can:

• Assign any instrument sound — piano, violin, synth, whatever you like
• Edit individual wrong notes by dragging them in a piano roll (a grid showing notes and timing)
• Transpose the whole melody up or down with one click
• Export it to any DAW (Digital Audio Workstation — software for making music) in the world

That's why MIDI is so powerful for capturing melody ideas: it's flexible in a way that a plain recording is not.

Step-by-Step: Turn Your Humming into MIDI for Free

The fastest free path uses LA Studio's Audio to MIDI converter — a browser-based tool that runs entirely online, no account needed. Here's the full process:

Step 1 — Record Your Hum

You don't need a fancy microphone. Your phone or laptop mic is fine. Follow these tips for a clean recording:

• Find a quiet room — the converter works best when background noise is low
• Hum steadily, one note at a time. Avoid vibrato (wobbling pitch) if possible — straight, held tones convert more accurately
• Hum at a natural, comfortable volume — not too breathy, not too loud
• Record in a common format: MP3, WAV, M4A, or OGG all work

You can record directly in your phone's Voice Memos app (iPhone) or Voice Recorder app (Android), then transfer the file to your computer — or just open the browser on your phone and do everything there.

Step 2 — Open LA Studio's Audio to MIDI Tool

Go to la-studio.cc/audio-to-midi in any modern browser (Chrome or Edge work best). The tool uses Basic Pitch, an AI pitch-detection model developed by Spotify's research team, running directly inside your browser. Your audio never leaves your device — it's processed locally.

Step 3 — Upload Your Hum Recording

Click the upload area and select your recorded file, or drag and drop it onto the page. The tool accepts most common audio formats. Processing usually takes under 30 seconds for a short melody.

Step 4 — Review the Detected Notes

After processing, you'll see a piano roll view — a grid where each horizontal bar represents one note. The vertical axis shows pitch (higher on the grid = higher pitch), and the horizontal axis shows time. Look through the detected notes: AI pitch detection is very good at humming, but it can occasionally add an extra ghost note or misread a very short transition. You can clean these up in the next step.

Step 5 — Export the MIDI File

Click the export/download button to save a .mid file to your computer. This is your MIDI melody — ready to import into any DAW or music software.

Step 6 — Open and Edit in LA Studio's Editor

If you don't already have a DAW, open the downloaded MIDI file directly in LA Studio's free online editor. Import the MIDI, and it will appear on a piano roll track. From here you can:

• Drag notes to fix any wrong pitches
• Stretch or shorten notes to fix timing
• Assign a virtual instrument (piano, strings, synth) to hear your melody played back properly
• Add drums, chords, and more tracks to build out a full song

Tips for Getting a More Accurate Conversion

Humming-to-MIDI conversion is impressive, but the quality of your recording directly affects how clean the output is. Here's how to get the best results:

Hum One Note at a Time

Sliding smoothly between notes (called a glide or portamento) can confuse the AI — it may detect the slide as multiple extra notes. Instead, try to jump cleanly between notes with a tiny silence between them, the way a pianist lifts their finger before pressing the next key.

Use a Consistent Tempo

Try humming along to a metronome (free apps like Metronome Beats on Android/iOS work great). When your timing is regular, the resulting MIDI will line up neatly to a grid, making editing much easier.

Avoid Breathing Noise

Take breaths away from the mic, or edit out the breath sounds in any audio editor before converting. Breaths can sometimes be interpreted as very quiet low notes.

Hum in Your Comfortable Range

Pitch detection is most accurate in the middle of your vocal range. Straining at the very top or bottom of your range introduces pitch wobble that confuses the converter.

Try "La" or a Whistle Instead of Humming

Interestingly, some singers find that singing "la-la-la" or even whistling gives cleaner note separation than closed-mouth humming. Experiment to see what gives you the clearest piano roll output.

What Can You Do With the MIDI Melody Once You Have It?

Getting your melody into MIDI format is just the beginning. Here are some common next steps:

Add Chords and Harmony

Once you have your melody as MIDI, you can use LA Studio's piano roll to figure out which chords fit underneath it. Play the melody back on a piano sound and try adding chord notes below the melody line. This is how professional composers "harmonize" a tune.

Assign Different Instrument Sounds

In LA Studio, you can assign your MIDI track to a synth, a guitar patch, strings, or a grand piano. The same melody can instantly become a film score motif or a pop hook just by changing the instrument.

Use It as a Starting Point for AI Music Generation

Some AI music tools accept MIDI melodies as a guide or reference. You could use your hummed melody to prompt an AI to build a full arrangement around it — drums, bass, chords, and all.

Share or Collaborate

MIDI files are tiny (often just a few kilobytes) and universally compatible. You can email your melody to a producer friend, open it in GarageBand, FL Studio, Ableton, Logic Pro, or any other DAW. The format is completely open.

Free Online Voice-to-MIDI Tools Compared

There are a few different ways to convert humming to MIDI online for free. Here's an honest comparison:

• LA Studio Audio to MIDI (la-studio.cc/audio-to-midi) — Uses Spotify's Basic Pitch AI model. Runs fully in-browser (no upload to a server), free, no account required. Best for: clean, simple melodies hummed or sung solo. Exports standard .mid files.
• Basic Pitch (Spotify) web app — The original open-source tool from Spotify's research lab. Also browser-based and free. Very similar output to LA Studio since they share the same underlying model. Useful reference if you want to compare results.
• SoundSlice / Transcription tools — Some notation and transcription platforms offer audio-to-score features, but they're typically aimed at polyphonic audio (full songs) rather than single-voice humming, and many require a paid subscription.
• MIDI Guitar / mobile apps — Apps like Sing2Notes (iOS) let you hum directly into your phone and get MIDI out. Convenient, but output quality varies and most charge a subscription for full export.

For a beginner who just wants to capture a melody idea and start editing it, the browser-based free option is the obvious starting point.

Honest Limitations to Know Before You Start

AI pitch detection has come a long way, but it's not magic. Here's what to realistically expect:

• Polyphonic humming won't work well — These tools are optimized for a single melodic line. If you try to hum chords or a complex multi-part arrangement, accuracy drops significantly.
• Timing cleanup is usually needed — Your human timing will rarely snap perfectly to a musical grid. Plan to spend 5–10 minutes nudging notes into place in the piano roll after conversion.
• Very fast melodies can merge or split incorrectly — Rapid ornaments (trills, grace notes) may confuse the detector. Keep runs and fast passages simple when first experimenting.
• Browser and hardware requirements — LA Studio's Audio to MIDI tool requires a modern browser (Chrome 112+ or Edge 112+ recommended). Older browsers may not support the WebAssembly processing it uses.

Frequently Asked Questions

Q. Do I need to be able to sing well to convert humming to MIDI?

A. No — you just need to hum the notes reasonably in tune. The AI detects the pitch of what you hum, not how pretty it sounds. Even an off-key hum will be detected and you can manually correct wrong notes afterward in the piano roll.

Q. Can I use my phone microphone, or do I need a real mic?

A. A phone or laptop mic is completely fine for capturing a simple melody hum. A dedicated USB microphone will give you a cleaner recording with less background noise, which improves accuracy — but it's not required to get started.

Q. Is the conversion really free? What's the catch?

A. LA Studio's Audio to MIDI tool is genuinely free with no account required for standard use. The AI model (Basic Pitch) is open-source. LA Studio does offer paid Pro plans for more advanced features elsewhere on the platform, but the MIDI conversion itself has no cost or usage cap for typical melody files.

Q. What if the MIDI notes are slightly off-key or the timing is wrong?

A. That's totally normal and expected. Open the exported MIDI in LA Studio's editor (or any DAW), and use the piano roll to drag notes to the correct pitch or position. Most melodies need 5–10 minutes of cleanup — it's much faster than entering every note from scratch.

Q. Can I convert a melody I'm whistling, not humming?

A. Yes — whistling often gives even cleaner results than humming because the tone is purer and the note boundaries are crisper. Singing "la" or "do" syllables also works well. Anything that produces a clear, single-pitch tone at a time will convert accurately.