Karaoke Night
Sing over the backing track while the lyrics light up word by word.
See your voice. Take the karaoke stage.
How Karaoke Night works
- 01 Pick a song
- 02 Mute the vocals with a tap
- 03 The lyrics light up in time
- 04 Match your pitch to the original vocal
About this clip
Karaoke Night in Zen view. Violet Light is a demo song, sung here by a test voice.
The rooms
Whatever you play, there's a room for it.
Singers came first. Pianists, guitarists and drummers now have rooms that check what they play against the part, and Ear Lab tests your hearing.
Voice Mirror
Sing for a minute. Get your range, your accuracy and a voice twin.
Jam Rooms
Sing one song with up to 12 people, each on their own pitch lane.
Piano Night
Read it falling, on a staff or on the keys, and loop the bar that won't sit.
Drum Night
Play a groove and see how many milliseconds early or late you land.
Free tools
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Vocal range test Your lowest and highest note -
Voice type test The voice band your range fits -
Pitch training Sing on pitch, scored in cents -
Vocal remover Split a song into vocals and backing -
Which singer has my range? A famous singer who covers your notes -
Break Glass Hold the note until the glass breaks
Karaoke Night
Drop in a song and the singer steps aside.
The lyrics light up word by word with the note to sing above each one, and every note you sing is drawn against the melody.
Three example songs come ready, with the vocals already separated and the lyrics timed word by word. Try singing Goodbye to Spring or Nothing in the Dark, both by Josh Woodward.
Song credits
Goodbye to Spring and Nothing in the Dark by Josh Woodward, licensed CC BY 4.0. The vocals are separated and the lyrics timed for Karaoke Night.
Two of these are free and three are for supporters. See the backgrounds room by room.
The Voice Mirror
Meet your voice twin.
About a minute, in four steps
- Glide up, lowest note to highest.
- Glide back down.
- Hold one note and meet your voice twin.
- Sing five notes back for your voiceprint.
Slide up from your lowest comfortable note to your highest, like a siren, then slide back down. Hold one note steady, and the Mirror names the legendary singer whose range lines up with yours. Then it plays five short notes for you to sing back, any octave counts, and puts your range, accuracy and steadiness on a voiceprint you can share.
Sing it again later in the same browser and your results show how your range changed since your last run.
Sing the Universe: melodies made from stars, pulsars and a black hole.
Illustrative example data
MERCURYPITCH · VOICEPRINT Example
C3 – C5 2 octaves Tenor Example: +2 semitones since last time
- Accuracy
- hit 4 of 5 notes
- Steadiness
- ±9¢ on the hold
- Vibrato
- 5.6 Hz · ±26¢
- Onset
- scoops ~180 ms
Example result
Tap to meet your voice twin
About this picture
Where it starts: the Mirror's start screen.
Jam Rooms
Give everyone a part.
Send the link, pick a singer and drag down their lines. Up to 12 of you can sing, each on a live pitch lane.
About this clip
A preview room with demo singers. Ada and Bo are stand-ins and Violet Light is a demo song; the room around them is the real Jam interface.
Piano, guitar and drums
Rooms for the instrument in your hands.
Piano Night
Every note falls toward the key that plays it.
Slow a phrase to half speed and repeat it until it sits, on the screen keys or a MIDI keyboard.
About this clip
The bundled Afterglow Study on repeat at 120 BPM, played on the screen keys by a test script.
Guitar Night
Tab that rides a highway to your fret.
Load a Guitar Pro or MIDI file, turn on Listening, and the room scores you against the part.
About this clip
A synthetic 64-beat study in A minor, playing back with Listening off. Turn it on and the room scores what it hears.
Drum Night
Find out if you rush or drag.
Play on touch, your computer keys or an electronic kit over MIDI, and the phrase coach measures your timing in milliseconds.
About this clip
First Pocket on repeat at 84 BPM, played on the computer keys by a test script: the Pocket view, then the Score view.
Ear Lab
How small a difference can you hear?
Ear Lab tests your hearing with 18 drills, read in cents, milliseconds or decibels. The Ear Report then names your mix-ups: "You answer Fa (4) as Sol (5) on 33% of attempts."
About these pictures
Hairline, answered by a test script, and the Ear Report, with history from a test profile.
Practice and progress
You can't hear yourself improving. You can see it.
About this picture
A scale exercise sung by a test voice.
About this picture
Progress from a test profile.
Hear Yourself
Twin Trails lays an older take over a newer one, and neither is stretched to fit the other. What you keep stays on your device.
About this picture
Two takes of one phrase, sung by a test voice.
Exercises with a guide
Run a scale or sing a melody, and watch your pitch drawn live against each target note. A guide voice plays the note for you. There are nine of them, from Aria's loud piano to Nova's octave below.
Focus Mode clears the screen down to you and the note.
Challenges and leaderboards
A weekly challenge to sing, and leaderboards for your league, your friends and everyone.
They need an account, and you choose whether to appear.
Break Glass
The pane rings at a note from your own range. Sing up to it and hold it until the cracks spread. Sixty seconds, free.
Why it's free
Singing and practice cost nothing.
That's the deal, and it stays. Two things are paid: cloud GPU separation runs on credits, and supporters get extra room backgrounds.
Open source, AGPL-3.0 Credits only for Cloud GPU
What people said
Our favorite lines so far.
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This looks really good on the first view. The feedback for your voice looks really [good]. Will give it a deeper look.
On Reddit -
I love this! Especially checking the intonation of the singer showing the pitch differences.
On Discord -
A great app that allows you to learn and have fun at the same time. Very nice design with an interesting mascot.
In person
From people who tried MercuryPitch on Reddit and Discord, and in person.
Questions
Before you join.
Is it really free?
Yes, to sing and practice. Karaoke Night with separation in your browser, the Voice Mirror, the exercises, Jam Rooms and the challenges cost nothing. Two things are paid: cloud GPU separation uses credits, and supporters get extra room backgrounds. See what supporters get.
Do I need an account?
No, you don't need an account. If you create one, you can keep your progress, scores and voiceprint on every device you sign in on, add friends, join the leagues and separate songs on the cloud GPU. Create a free account.
I can't sing yet. Is this for me?
Yes. The Ascent is a seven-week path at about five minutes a day. Beside it are 20+ short exercises for your voice and your ear, from Long Note and Vibrato to Sight-Singing and the Ear Lab drills. Every run shows how you did, and the exercise menu suggests what to drill next. Progress counts your practice days and streaks, and Hear Yourself keeps your takes on this device, so you can compare your first one with your latest.
What songs can I sing?
Any song you have as an audio file. Karaoke Night looks up its synced lyrics on LRCLIB, or you can add your own. To try it first, sing Goodbye to Spring or Nothing in the Dark, both by Josh Woodward.
Can I remove the vocals from a song?
Yes. On a phone or a computer, Karaoke Night splits a song into vocals and backing in your browser, for free. For the cleanest split, sign in and run it on the cloud GPU for credits. You see the price per song before you choose it. Open the vocal remover.
Can I sing with friends?
Yes. A Jam Room holds up to 12 people in one session, with the lyrics in sync, parts split per singer and a live pitch lane for each voice. Start a Jam Room.
What do supporters get?
Extra backgrounds for the rooms and a supporter badge on your account. Supporting is a one-time donation, not a subscription, and singing and practice stay free either way. See the supporter backgrounds.
Where does my audio go?
Jam sends your live voice to the singers in your room, directly or through a relay, and we don't record it. Cloud separation uploads the song you pick, and voice control uses your browser's speech service unless you choose the on-device engine. Your scores, progress and settings are saved to your account, an anonymous one until you sign in, and your recorded takes stay on this device. Read the privacy notice.
Who are Aria, Echo and the others?
They're the guide voices that play your target note: Aria is a loud piano, Echo a soft one, Harmony adds a third above, Nova an octave below, and Spark plays short plucked notes for timing. There are nine to choose from in the sidebar. Open the app.