Stage 0 · for grown-ups
Sound check
Pick an interval and a direction, then press Play. Each play starts on a new random note unless you choose one.
1 · Interval
2 · Direction
Nothing played yet.
Mystery interval
Plays a random interval going up. Guess it, then reveal.
No sound on an iPhone or iPad? Check the volume, and on older iOS versions flip the ringer switch off silent. Headphones make the difference between close intervals much easier to hear.