Key- and groove-matched writing
Melodies land in your track's key and phrase against its rhythm — a topline composed for this instrumental, not pasted over it.
Add Vocals to Your Instrumental
Add Vocals to Your Instrumental
Add a new vocal performance with lyrics, style, and gender controls
Examples
ExamplesChrome Daybreak
SynthwaveInstrumental
3:01
ExamplesWeekend Voltage
Dance PopElectropop
0:45
ExamplesRiver Street Shoes
Chicago BluesSoul
3:00
ExamplesGlass Arcade
Future BassInstrumental
2:59
ExamplesPostcard in Motion
Latin PopTropical
0:45
ExamplesBrass Above Broadway
Jazz-FunkInstrumental
2:59
your beat, finally singing
What a topline needs from your track
Upload a beat or backing track, decide what the song should say, and hear a complete vocal performance written into the space your arrangement left for it.
The engine reads the instrumental's key, tempo, and section boundaries, then writes and performs a vocal that treats them as law: verses where the energy sits low, hooks where the track opens up, phrase-endings that breathe with the drums. Your lyrical input — full lyrics, a theme, a title — sets what gets sung.
Voice character is a casting decision you make, not an accident you receive. Audition the same section with different vocal directions and the beat will tell you which singer it was waiting for.
Every producer has the folder: instrumentals that are finished except for the only thing listeners will remember. This tool closes that gap. Give it the beat and a lyrical direction — your finished words or just the concept — and it composes a topline that fits your track's key, rides its rhythm, and enters where the arrangement invites a voice.
The instrumental's structure does half the work. Clear sections and a pocket of space in the midrange give the vocal somewhere to live; a wall of melodic layers in the vocal register forces the topline to fight its own accompaniment. Listen to your beat as a singer would before you upload it.
From beat to song
Your words or your premise
Bring finished lyrics for exact control, or hand over a concept and let the lyric be drafted to fit the section lengths your beat defines.
Vocal casting options
Direct the voice's character and register, then re-cast and compare. The right voice makes the same melody land twice as hard.
Getting a vocal that sits right
Treat it like a session with a topline writer: prepare the track, brief the song, then listen like a mix engineer.
- 1
Prep the instrumental
Export a clean, well-structured version — intro, sections, ending. If the beat never changes, the vocal has no map to write to.
- 2
Brief the song, not just the sound
Who's singing, to whom, about what? A sentence of story plus the emotional peak's location gives the topline a reason to move the way it does.
- 3
Check entrances and collisions
Audit where the voice enters, whether words survive the busiest bars, and whether any synth line is wrestling the melody. Adjust and re-run with intent.
Who's adding vocals
Beatmakers becoming songwriters
Turn the strongest instrumental in the folder into a pitchable song — hook, verses, and a voice selling the idea.
Writers auditioning toplines
Test three lyrical premises over the same track in an afternoon and discover which one the beat actually wants.
Creators with licensed beds
Where the license allows derivative use, give a purchased instrumental an original vocal identity nobody else's version will have.
Producer notes for better toplines
Leave the singer a lane
If lead synths and vocals occupy the same register, someone loses. Thin the midrange before generating, or accept a vocal that pushes to the edges of its range.
Write to your section lengths
An eight-bar verse holds roughly four lyrical lines comfortably. Cramming more forces rushed phrasing everywhere — cut words, not corners.
Verify the beat is yours to build on
Type beats and licensed instrumentals carry terms about derivative works. Confirm the license covers a vocal version before the song exists, not after it charts.
Adding vocals, in practice
Will the vocal actually be in key with my beat?
Yes — key detection anchors the melody writing, so the topline sits harmonically inside your track. If your instrumental modulates mid-song, note it in the brief so the vocal follows the change.
Can I hear different voices on the same topline?
Re-run the generation with different vocal direction and compare takes side by side. Casting is cheap here — exploit that before settling.
My beat has no clear structure. Will this still work?
It will sing, but toplines thrive on contrast. Even rough section markers — a sparser stretch for verses, a fuller one for the hook — dramatically improve where melodies rise and rest.
Do I own the finished song?
Your rights to the combined work follow your plan's license for the generated vocal plus whatever rights you hold in the instrumental. Both halves need to be clean for the song to be releasable.
Let the beat meet its voice
Upload the instrumental that's been waiting, brief the song it should become, and press play on the finished idea.
Add the vocals