How does singing and playing at once actually work?

Fiume listens to the same microphone and separates the voice melody from the chord underneath it. You see a pitch contour for the voice and the chord name for the instrument, at the same time, on one screen.

Is this only for guitar?

No. It works for guitar, piano, ukulele and most chord-based instruments. As long as a microphone can pick up the voice and the chord together, the monitor can display both.

I keep flattening the melody when I strum — what do I do?

This is one of the most common singer-guitarist problems. Watching the voice contour next to the chord makes the drop visible. Usually the fix is air support, not pitch memory — once you see it, you can practice it directly.

Can I slow down or loop a tricky phrase?

Yes. You can keep the monitor open while practicing a two-bar fragment repeatedly. Each loop leaves a contour you can compare to the one before.

Does it handle songwriting?

Yes, and this is where many people end up using it most. You can discover a chord by strumming it, and test whether a melody idea actually sits against that chord without second-guessing.

Do I need an audio interface?

No. A phone or laptop mic handles voice plus acoustic guitar or piano together. An interface helps if you want to plug in an electric guitar, but it is never required.

Sing and play at the same time

See your voice and your chord on one screen

Fiume listens to you sing and strum at the same time. The voice melody becomes a live pitch contour, the chord becomes a readable label — so you can finally tell which one is drifting when the song feels off.

Open voice + chord monitor Read the FAQ

Free in your browser. Works with any acoustic guitar, piano or ukulele.

Animated preview of Fiume voice and chord monitor.

Voice contour in real time

The melody becomes a line you can watch, not a mystery. Flat notes, sliding attacks and sag all show up instantly.

Chord name, live

Strum a chord and see its name on screen. Useful when you’re learning a song by ear or writing as you play.

Both at once

No switching tabs. Voice and instrument share one screen, one mic, one session.

Private by default

No upload, no sign-up. Everything runs in your browser tab.

Why this matters

Singing and playing fail in different ways

When a song feels off, the usual instinct is to blame the voice. In reality, the problem often lives somewhere more specific, and seeing both layers at once makes it obvious.

Melody drifts under pressure

Strumming takes air. Sustained vocal notes often sag a few cents the moment your hand starts doing something complex. The contour shows exactly when.

Chord voicings confuse the ear

A C/E or D/F# can sound “wrong” if you expected a root-position chord. Seeing the chord name while you play confirms what you actually played.

Transitions hide the problem

Chord changes are where singers rush or land late. Watching both layers reveals whether it was the chord change, the breath, or the entrance that actually slipped.

Who uses it

The players Fiume’s voice + chord monitor was built for

Anyone who holds an instrument and sings at the same time has the problem this tool solves. These are the most common cases.

Singer-guitarists Home practice with acoustic or nylon-string. Catch melody drift before it turns into a performance habit.
Singer-pianists Voice in the mid range while two hands do the harmony. The contour tells you where the melody was dragged down by the chord.
Ukulele songwriters Test a melody against a chord you just discovered, without stopping to write out the chord chart first.
Worship & folk leaders Rehearse leading a room — sing lead while playing rhythm, and confirm the melody stays under control.
Songwriters in a flow Capture what you just played by seeing the chord name on screen, and test whether a new lyric idea actually fits.
Teachers of pop voice Demonstrate how melody behaves over common progressions using one visual reference instead of describing it.

How to use it

Three steps to a tighter sing-and-play

Start narrow. One chord, one line of melody, one comparison. Then build outward.

1
Pick one problem phrase

Not a whole song — just the one line that always feels off. Two bars is the right size to start.
2
Run it once as a baseline

Sing and strum without trying to fix anything. Watch both layers. Name the specific issue: flat melody, late entrance, clashing voicing.
3
Change one thing, run it again

Add air support, change the chord voicing, or slow the strum. Compare the contour against the baseline. Keep whichever change worked.

FAQ

Sing-and-play questions, answered

Will it get confused between voice and guitar?

No. The engine separates the voice melody from the chord underneath, so each one lands in its own lane on screen.

Can I use it with a loop pedal?

Yes. Run the pedal through your interface and feed it into the browser. The monitor will track whatever arrives at the mic input.

How close should I sit to the mic?

Close enough that the voice is clear but not so close that the strum clips. About 20–30 cm from a laptop mic usually works.

Does it work for duets?

It is designed for one voice plus one instrument. Two voices will still be read, but the contour will blend. Better to practice each voice separately and then combine.

Can I record the session?

The monitor itself does not record. Run a recording app in parallel and use the monitor for the live visual feedback.

Is my audio uploaded anywhere?

No. All pitch and chord detection runs inside the browser tab. Your session never leaves your device.

Put your voice and your chords on one screen

Pick one phrase, run it, adjust, run it again. The contour does the judging for you.

Open voice + chord monitor

Free, private, no account needed.