Guess the tune.
Every tune draws its own shape on the spiral. This one is today's. Can you name it?
Today's tune
Music
Tunes
The full deck, one tune at a time. Every dot is a tune.
Shapes
Chords, scales and intervals. Each one draws its own shape.
Or just
Reverse
Hear a tune, then pick the spiral that drew it.
Real sounds
Sounds
A rooster, a ship's horn, a singing bowl. Real sounds have shapes too.
Diagnostics
A heart murmur, a damaged muffler, two black holes colliding. Sounds that experts read by ear.
Or just