Harmony Singer - AI Backup Vocals

Simple (2-voice)

Choir (4-voice)

Root

Auto key: listening…

Engine

Stretch keeps your vowel colour when shifting; granular is lighter on CPU.

Source

Instrument plays

An instrument through the speakers feeds back far less than a shifted copy of your voice. Piano samples load from tonejs.github.io on first use.

Capture

Recordings download as .webm when stopped. The log is JSON: notes, shifts, key, gate, notches and 2 Hz input stats.

Level 70%

Dry Signal 80%

Amount 30%

Richness 30%

Pitch Smoothing 50%

Click "Start Singing" and allow microphone access
Sing into your microphone - the app will detect your pitch
Choose a harmony mode: Unison doubles your voice, Thirds for pop, Fifths for folk
Select harmony position: Above, Below, or Both for full harmonies
Adjust the harmony volume to blend with your voice
Use reverb to add space and polish to the sound
Pick the song's key (or leave Root on Auto-detect) so harmonies stay in key; Chromatic gives fixed parallel intervals
Try different scales - Major sounds happy, Minor sounds emotional