A camera for sound. Point your phone at a voice, a guitar or a record and watch it draw a spiral of notes, live. On iPhone and Android in November.
This is the soundcheck. The app is quicker, does far more, and is free on iPhone and Android in November. Premium adds your session card, 5‑minute clips and premium themes. See the app
It listens and draws. Low notes sit near the middle, high notes near the rim, and every note with the same name lands on the same spoke.
A warm-up tune, drawn as dots and nothing else. Name it from the shape. Stuck? Ask for a hint and you'll hear it. A new one every day.
Play the full game, with 36 tunes and six ways to play.
One picture, four more reasons to open it. Start with whichever sounds like you.
Film whoever is making the sound and the spiral together, in one vertical video. Send it to TikTok, Instagram or Snap, or anywhere your phone can share. Missed it? One tap replays the last 5 seconds.
A coral ring marks the note. Get your dot inside it and hold it there. Too high or too low, you see which way and by how much.
Slide to find it. Any octave counts.
Also on the practice rack: a chromatic tuner with instrument presets, your choice of A (440, 442 or 432), a drone, a metronome that can find your tempo, a solfège game, vibrato you can watch, and a session card with your range.
Put on a record and mirror your phone to the TV. The bass stays near the middle, the tune runs around the rim, and after a few songs you start to know the shapes before you know the names.
One sung note is really a stack of them. This is an A at 220 Hz with its harmonics riding on top. The 2nd is the A an octave up. The 3rd lands near an E and the 5th near a C♯, so there's an A major chord hiding inside a single note.
The app shows your vibrato as it happens, drawn around the note.
| HarmonicNo. | Lands nearNear | Hz | Off by |
|---|---|---|---|
| 1st | A3 | 220 | 0¢ |
| 2nd | A4 | 440 | 0¢ |
| 3rd | E5 | 660 | +2¢ |
| 4th | A5 | 880 | 0¢ |
| 5th | C♯6 | 1,100 | −14¢ |
| 6th | E6 | 1,320 | +2¢ |
Off by is how far each harmonic sits from the piano's version of that note, in cents. A hundred cents is one half step.
Everyone comes for the same thing: a note landing where they made it. Then they stay for different reasons. Pick yours.
Sixteen shirt designs drawn from the spiral and the wordmark on its own, on tees, long sleeves, V-necks, crop tees, crewnecks and hoodies, plus a beanie, caps, totes, a mug, a bottle and stickers. Every shirt carries a small code that brings whoever scans it back here.
Browse the tableShirts on sale now. Printed to order.
Opening night is in November. Leave your email and we'll tell you the day it opens.
Admit one
Point your phone's camera here to open this page on it.
Keep this stub. You won't need it, but it's a nice stub.