09 Voice & AI
Voice to InstrumentTurn humming into music and MIDI
Hum, sing or whistle a melody and hear it on piano, guitar, cello or sax.
Drop your audio here
MP3, WAV, FLAC, OGG, M4A · up to 100 MB and 10 minutes
orFree · local processing · no account
Monophonic pitch detection and synthesis. Use an isolated voice; instruments are synthesized, not recorded samples.
Engines and licensesAbout Voice to Instrument
Voice to Instrument detects the notes and rhythm of the melody you hum and plays it back on the instrument you choose: piano, guitar, cello, saxophone, harmonium, organ or synth pad. The instruments are synthesized in your browser. You can fix notes in a piano-roll editor, repeat the melody up to 8 times and download it as audio or as a MIDI file.
What you can do with it
- 01
Capture ideas without an instrument
When a melody pops into your head, hum it and hear it on piano or guitar so you don't forget it.
- 02
From voice to DAW
Download the MIDI and open it in your production or notation software to change the sound, harmonize or arrange it.
- 03
Your own music for videos
Hum a jingle, turn it into organ or synth, loop it a few times and use it as a background: the melody is yours.
- 04
Explore timbres in class
Hear the same melody on cello, sax or piano and compare how its character changes.
How it works, in 3 steps
Hum or upload a recording
Record a melody one note at a time, humming, singing or whistling, or upload audio with a single voice.
Detect and fix the notes
Click «Detect notes» and fix any that are off in the editor: move them up or down, lengthen, split or delete them.
Choose an instrument and download
Pick one of the seven instruments and the number of repeats, listen to the result and download it as audio or MIDI.
Downloads and editing
Audio
The instrument playing your melody, as WAV, MP3, FLAC or OGG, ready to listen to or drop into a video.
MIDI (.mid)
Just the performance data: which notes play and when. Open it in any music program to change the sound or edit it.
MIDI on tempo
If you hummed along to a metronome, enter its tempo and the notes line up with the grid.
Note editor
Raise or lower a note, lengthen, shorten or split it, add one, delete it or transpose the whole melody, with undo.
Tips for better results
- Monophonic pitch detection and synthesis. Use an isolated voice; instruments are synthesized, not recorded samples.
- Melodies of one note at a time work best: the tool doesn't recognize chords or harmonies.
- Record somewhere quiet with a single voice; if your audio has music, isolate the voice first with Vocal Remover.
- You don't need perfect pitch: each note snaps to the nearest one, so just get the shape of the melody right.
- Hum with clear syllables like «la» or «da» so the start of each note is well defined.
Frequently asked questions
What kind of recording works best?
A clear melody, one note at a time: humming, «la, la, la» or whistling, somewhere quiet. Avoid singing chords or recording several voices at once.
What if I'm off-key when humming?
No problem: each note snaps to the nearest one, so getting the shape of the melody right is enough. If one comes out wrong, fix it in the editor.
Which instruments are there?
Seven: piano, guitar, cello, saxophone, harmonium, organ and synth pad. Try the same melody on all of them without recording again.
What's the difference between audio and MIDI?
Audio is finished sound. MIDI is the notes as data, with no sound of its own, so you can edit them or assign another instrument in a music program.
Why doesn't it sound like a real musician?
The instruments are synthesized and reproduce your notes and rhythm, without a performer's articulation and nuance. Think of it as a faithful sketch of your melody.