NNiceVois
Vocal harmonies

Generate vocal harmonies online

Turn one lead vocal into an upper harmony, a lower harmony and a ready-to-listen mix. Both harmonies use the same voice as your lead. No instrumental or key to enter.

Checking Harmony Generator availability…

Three simple steps

From one vocal to a fuller arrangement

Bring the lead. NiceVois builds the two harmony parts around it.

  1. Upload your lead vocal. Drop in a solo singing recording. A clear, dry vocal gives the tool a better melody to follow.
  2. Generate the harmonies. Pick a format and press Generate harmonies. Both parts use the same voice as your lead. NiceVois finds the sung notes and chooses an upper and a lower harmony line.
  3. Listen and download. Play each harmony on its own, or hear both with your original lead. Download the separate parts to mix them your way.

Your three downloads

Keep the parts. Or take the mix.

01

Upper harmony A new vocal line above the lead melody, on its own and ready to mix.

02

Lower harmony A supporting vocal line below the lead melody, saved as a separate part.

03

Vocal with harmonies Your original lead with both harmony parts balanced underneath and spread to either side.

The separate parts follow your lead's timeline. Drop them into your DAW to choose your own balance, panning and effects.

It follows the notes you sing

NiceVois detects the melody in your lead vocal and estimates a key from those notes. It then chooses higher and lower notes that fit that estimate, while aiming for smooth movement between them.

It does more than shift the whole recording up or down by one fixed amount. The harmony notes can change as the melody moves.

Start with a clear solo voice

One singer, little background music and as little reverb as possible work best. Multiple singers and heavy effects can make the melody harder to read.

Only have the full song? Use the lead and backing vocal splitter first, then upload the lead vocal here.

Worth knowing: a vocal alone cannot reveal every backing chord. Note choices are estimates, not a finished musical arrangement. Listen against your song; some recordings may need edits or can produce audible artifacts.

Stay in the workspace

Prepare the vocal before adding harmonies

Take out background music, reduce noise or remove room reverb. The same NiceVois tools are ready below.

Vocal and Instrumental Separator

Split a song into vocals and instrumental

Drop in a song and get the vocals and the instrumental as separate files.

Noise remover

Take hiss, hum and room noise off a recording

Hiss, hum and room noise come off. What was said or sung stays exactly as it was.

See how Vocal Enhancer works

Reverb remover

Take room and echo off a vocal you want dry

The room's wash comes off and the recording comes back dry, ready to place anywhere.

Common questions

What do I upload?

Upload a solo lead vocal: one singer, with as little instrumental, noise and reverb as possible. WAV, MP3, FLAC, M4A and OGG are supported. If you only have a full song, separate the lead vocal first.

Do I need an instrumental or know the key?

No. NiceVois follows the notes in your singing and estimates a key from the vocal. You do not need to upload an instrumental or enter a key. A lead melody does not reveal every backing chord, so listen to the harmonies with your song before using them.

What files do I get back?

Three files: Upper harmony, Lower harmony and Vocal with harmonies. The first two are separate harmony parts. The third combines your original lead with both harmonies, with their levels balanced and the harmony parts panned to either side.

Is this a harmony generator or a backing vocal separator?

This creates new harmony parts from your lead vocal. It does not extract singers already in a recording. To isolate existing harmonies, use the lead and backing vocal splitter instead.

Can I use the harmonies in my DAW?

Yes. Download the upper and lower parts separately and place them alongside your lead vocal. They follow the original recording's timeline, so you can adjust their levels, panning and effects in your DAW. Choose WAV or FLAC for lossless files, or MP3 for a smaller download.

How does Same as input work?

WAV, FLAC and MP3 inputs keep their format. Other supported input formats return WAV. You can also choose WAV, FLAC or MP3 yourself.

Can I choose the harmony voice?

Not at the moment. Both harmonies are sung in the same voice as your lead, so there is no voice to pick. Your original lead stays unchanged in the mix.

Can I use a short clip?

Yes. There is no minimum duration: a readable two- or three-second singing clip can be used. Each file can be up to fifteen minutes long, within the 200 MB upload limit and your available minutes.

Is Harmony Generator free to try?

Yes. No sign-in is needed for 5 free harmony-download minutes. Lite includes 20 minutes per rolling 24 hours; Unlimited is unlimited. Each harmony uses its source length from your minutes when it is ready. Listening and downloads are then free, and a failed harmony uses nothing. Your remaining minutes appear in the tool. See the subscription plans for more access.

Where are my previous harmonies?

Open Previous harmony generations below the tool to revisit recent completed jobs. Choosing a new file keeps the earlier results there, rather than mixing them with the new job.

Are my recordings shared?

Your recording is processed for your job, not published as a public demo. See the privacy policy for storage and retention details. Only upload audio you have permission to use.