Is this the same as a vocal remover?

No. A vocal remover pulls all the singing away from the instruments. Cantor takes the singing itself apart into its four choral voices.

Do I need the sheet music?

No. Cantor works from the audio alone. It uses no score.

New accounts get 15 minutes of audio free. There is no card and nothing to cancel.

Choir recording to four parts

Separate a choir recording into soprano, alto, tenor and bass.

Upload a recording of a choir. Cantor listens for the four voice parts and gives each one back as its own audio file, so you can hear the sopranos on their own, then the altos, then the tenors, then the basses.

Try Cantor Hear a real result

What you get

Four audio files, one per voice part, the same length as your recording and lined up with it. Play any one on its own, or mute the others in Cantor's player to hear how your part sits against the rest.

It works from a normal stereo recording. You do not need separate microphones on each section, a score, or anything other than the audio.

What to upload

An MP3, WAV, M4A or FLAC file, or a YouTube link. Recordings up to thirty minutes. The cleanest results come from a cappella singing with the choir well balanced and not too much room echo. Choir with piano or organ works too: choose the setting for accompaniment and the instruments are removed first.

Where it struggles, honestly

Dense chords where two parts sing close together, heavy reverb, and recordings from a phone at the back of a hall. When a part is sung by only one or two people it can be quieter than you would like. A soloist singing over the choir needs the lead vocal setting, or the soloist ends up in every part.

A real Cantor audio example

This is an actual 30-second separation, not a reconstruction or mock-up. Start with the mixture, then compare each generated voice stem.

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Source audio: Cantoría Dataset, licensed CC BY 4.0. Separation by Cantor.

Questions people ask

Is this the same as a vocal remover?: No. A vocal remover pulls all the singing away from the instruments. Cantor takes the singing itself apart into its four choral voices.
Do I need the sheet music?: No. Cantor works from the audio alone. It uses no score.
What does it cost?: New accounts get 15 minutes of audio free. There is no card and nothing to cancel.

Try it on your own recording

Sign in with Google or with a code sent to your email. New accounts start with 15 minutes of audio, no card needed. Open Cantor, or read the full guide to what it does and does not do.