1882 · just-intonation lattice
The Lattice
Play Resonance’s harmony as a living just-intonation lattice: every node is an exact small-integer frequency ratio, and consonance you can hear is closeness you can see.
Keyboard: the home row is near the tonic 1/1. Step right for a pure fifth 3/2, step up a row for a pure major third 5/4. Hold several keys to ring a beatless just chord. A MIDI keyboard, or tapping the nodes, works too.
Solid links are pure perfect fifths (×3/2); dashed links are pure major thirds (×5/4). The heavy-ringed node is the tonic 1/1. Adjacency is consonance.