Vocal harmonizer

Drop a sung vocal to harmonize, or select a file. It opens in the Vocal Harmonizer, ready to run.

WAV · AIF · AIFF · MP3 · M4A · FLAC · OGG

How to add harmonies to a vocal

A harmonizer pedal or plugin moves your voice by an interval while you sing. This one works on a recorded vocal: it hears the melody and its key, writes harmony lines that stay in that key phrase by phrase, and sings each one again in the singer’s own voice.

  1. Add your vocal: Drop a WAV, AIFF, MP3, M4A, FLAC or OGG of one sung vocal on its own: one voice, no reverb, no music behind it. From a full song, isolate the vocal first.
  2. Choose the harmony: Pick one to four voices and a voicing: thirds, sixths, power (fourths, fifths and octaves), a close triad under the lead, wide, jazz sevenths or barbershop. The key is the melody’s own unless you set one.
  3. Play each voice and download: Each harmony comes back as its own WAV in key with your take, or all of them in one zip, to sit under the lead in your DAW. Each run sings up to 30 seconds of the take.

More ways to work with your music

Try our online tools to separate, transcribe and convert. Doseedo does it all.

Questions about the vocal harmonizer?

We have answers.

What is a vocal harmonizer?

A tool that adds harmony voices to a sung melody. A hardware harmonizer does it live as you sing. This one works on a recorded vocal: it writes the harmony in the melody’s key and sings each voice in the singer’s own voice.

Can I use it online?

Yes. It runs in the browser with nothing to install, and every harmony downloads as a WAV you can place under the lead in any DAW.

Which key does it harmonize in?

The key the melody sings, heard from the take, unless you set one. Each voice follows that key phrase by phrase rather than holding one fixed interval.

Does it work on a full song?

It takes the vocal on its own. For a finished song, pull the vocal out with the acapella extractor first, harmonize it, and put the voices back over the instrumental.

How long a vocal can it harmonize?

Each run sings up to 30 seconds of your take, so a longer vocal is done a section at a time.

Is it free?

Yes, to start. A free account comes with 120 credits a month, with no card needed to start, and a run of up to four voices on 30 seconds of vocal is 10 credits. Pro has 2,000 a month.

Try our free vocal harmonizer

  • Sung, not pitch-shifted

    Each harmony starts as your take moved to its notes, then is sung again by the vocal model with your take as the singer. So it keeps your words, your phrasing and your voice instead of sounding like a shifted copy of the lead.

  • In the key the melody sings

    The melody and its key are heard from the take, and the voices are planned together: a scale step away in that key, in the singer’s range, phrase by phrase. A take with no melody to hear is refused with that reason, never returned as an unharmonized copy.

  • From one harmony to a choir

    One voice a third above is the classic double. Two or three make a backing stack, and four spread wide is a small choir of the same singer. Each comes back separately, so the blend stays yours to set.

Vocal harmonizer, harmony generator, AI backing vocals: one job

Vocal harmonizer, AI vocal harmonizer, harmony generator, vocal harmony generator, AI backing vocals and a way to add harmony to vocals all name this one job. For a choir from one voice, see the AI choir generator; to pull the harmonies out of a finished mix, backing vocal separation; for the method step by step, the AI harmony generator guide.

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