the modes, built from the guitar pentatonic boxes you already know — see it, flip it, hear it
Every mode is a pentatonic scale you already know, plus two notes. Pick a key — the selector sets the major tonal center — and the five pentatonic boxes appear in order down the neck, each showing the two mode tones that turn that box into the full mode. Flip a mode pair to its relative minor and watch the same physical notes change color and meaning; switch the mode tones out to strip back to the bare pentatonic; press play on any box to hear what you see.
major key
click the selected mode pair again to flip major ↔ relative minor · mode tones toggles the two added notes in and out — out leaves the bare pentatonic, and the play buttons follow · hover a note to light up its degree family · click a note to hear it · drone sustains a tonal center — the top button drones the caption's key; each box's own drone button drones that box's hearing and follows its flips (one drone at a time) · click a color in the legend below to pin its family across every box
Metronome
BPM72
Vol80
A full metronome on its own clock — play all and the box buttons run at its tempo. (Shared component:
every At-Etudes app carries this metronome, first block, this look.)
Notepad
Note — what just happened
that note is filed nowhere —
Save note files the idea with this map's key, box set and tempo and clears the pad; Restore on any saved note brings the map back to that moment. Export writes one .atchart.md any At-Etudes app can open.